<?xml version="1.0" encoding="us-ascii"?>
<!-- Created by Merrill Corporation -->
<!-- Generated by Fujitsu XWand B0126 -->
<xsd:schema targetNamespace="http://www.tenethealth.com/20120331" attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:thc="http://www.tenethealth.com/20120331" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:us-gaap="http://fasb.org/us-gaap/2011-01-31" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:us-types="http://fasb.org/us-types/2011-01-31" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:stpr="http://xbrl.sec.gov/stpr/2011-01-31" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dei="http://xbrl.sec.gov/dei/2011-01-31" xmlns:xlink="http://www.w3.org/1999/xlink">
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:type="simple" xlink:href="thc-20120331_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="thc-20120331_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="thc-20120331_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="thc-20120331_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:roleType roleURI="http://www.tenethealth.com/role/DocumentAndEntityInformation" id="DocumentAndEntityInformation">
        <link:definition>0000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/BalanceSheet" id="BalanceSheet">
        <link:definition>0010 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/BalanceSheetParenthetical" id="BalanceSheetParenthetical">
        <link:definition>0015 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/StatementOfIncome" id="StatementOfIncome">
        <link:definition>0020 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/StatementOfIncomeCalc2" id="StatementOfIncomeCalc2">
        <link:definition>0021 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS CALC 2</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/StatementOfComprehensiveIncome" id="StatementOfComprehensiveIncome">
        <link:definition>0030 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OTHER COMPREHENSIVE INCOME</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/CashFlows" id="CashFlows">
        <link:definition>0040 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureBasisOfPresentation" id="DisclosureBasisOfPresentation">
        <link:definition>1010 - Disclosure - BASIS OF PRESENTATION</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureAccountsReceivableAndAllowanceForDoubtfulAccounts" id="DisclosureAccountsReceivableAndAllowanceForDoubtfulAccounts">
        <link:definition>1020 - Disclosure - ACCOUNTS RECEIVABLE AND ALLOWANCE FOR DOUBTFUL ACCOUNTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureDiscontinuedOperations" id="DisclosureDiscontinuedOperations">
        <link:definition>1030 - Disclosure - DISCONTINUED OPERATIONS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureImpairmentAndRestructuringCharges" id="DisclosureImpairmentAndRestructuringCharges">
        <link:definition>1040 - Disclosure - IMPAIRMENT AND RESTRUCTURING CHARGES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureLongTermDebtAndLeaseObligations" id="DisclosureLongTermDebtAndLeaseObligations">
        <link:definition>1050 - Disclosure - LONG-TERM DEBT AND LEASE OBLIGATIONS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureGuarantees" id="DisclosureGuarantees">
        <link:definition>1060 - Disclosure - GUARANTEES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEmployeeBenefitPlans" id="DisclosureEmployeeBenefitPlans">
        <link:definition>1070 - Disclosure - EMPLOYEE BENEFIT PLANS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEquity" id="DisclosureEquity">
        <link:definition>1080 - Disclosure - EQUITY</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosurePropertyAndProfessionalAndGeneralLiabilityInsurance" id="DisclosurePropertyAndProfessionalAndGeneralLiabilityInsurance">
        <link:definition>1090 - Disclosure - PROPERTY AND PROFESSIONAL AND GENERAL LIABILITY INSURANCE</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureClaimsAndLawsuits" id="DisclosureClaimsAndLawsuits">
        <link:definition>1100 - Disclosure - CLAIMS AND LAWSUITS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureIncomeTaxes" id="DisclosureIncomeTaxes">
        <link:definition>1110 - Disclosure - INCOME TAXES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEarningsPerCommonShare" id="DisclosureEarningsPerCommonShare">
        <link:definition>1120 - Disclosure - EARNINGS PER COMMON SHARE</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureFairValueMeasurements" id="DisclosureFairValueMeasurements">
        <link:definition>1130 - Disclosure - FAIR VALUE MEASUREMENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureAcquisitions" id="DisclosureAcquisitions">
        <link:definition>1140 - Disclosure - ACQUISITIONS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureRecentAccountingStandards" id="DisclosureRecentAccountingStandards">
        <link:definition>1150 - Disclosure - RECENT ACCOUNTING STANDARDS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureSubsequentEvents" id="DisclosureSubsequentEvents">
        <link:definition>1160 - Disclosure - SUBSEQUENT EVENTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureSegmentInformation" id="DisclosureSegmentInformation">
        <link:definition>1170 - Disclosure - SEGMENT INFORMATION</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureBasisOfPresentationPolicies" id="DisclosureBasisOfPresentationPolicies">
        <link:definition>2010 - Disclosure - BASIS OF PRESENTATION (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureBasisOfPresentationTables" id="DisclosureBasisOfPresentationTables">
        <link:definition>3010 - Disclosure - BASIS OF PRESENTATION (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureAccountsReceivableAndAllowanceForDoubtfulAccountsTables" id="DisclosureAccountsReceivableAndAllowanceForDoubtfulAccountsTables">
        <link:definition>3020 - Disclosure - ACCOUNTS RECEIVABLE AND ALLOWANCE FOR DOUBTFUL ACCOUNTS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureDiscontinuedOperationsTables" id="DisclosureDiscontinuedOperationsTables">
        <link:definition>3030 - Disclosure - DISCONTINUED OPERATIONS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureImpairmentAndRestructuringChargesTables" id="DisclosureImpairmentAndRestructuringChargesTables">
        <link:definition>3040 - Disclosure - IMPAIRMENT AND RESTRUCTURING CHARGES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureLongTermDebtAndLeaseObligationsTables" id="DisclosureLongTermDebtAndLeaseObligationsTables">
        <link:definition>3050 - Disclosure - LONG-TERM DEBT AND LEASE OBLIGATIONS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEmployeeBenefitPlansTables" id="DisclosureEmployeeBenefitPlansTables">
        <link:definition>3070 - Disclosure - EMPLOYEE BENEFIT PLANS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEquityTables" id="DisclosureEquityTables">
        <link:definition>3080 - Disclosure - EQUITY (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureClaimsAndLawsuitsTables" id="DisclosureClaimsAndLawsuitsTables">
        <link:definition>3100 - Disclosure - CLAIMS AND LAWSUITS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEarningsPerCommonShareTables" id="DisclosureEarningsPerCommonShareTables">
        <link:definition>3120 - Disclosure - EARNINGS PER COMMON SHARE (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureFairValueMeasurementsTables" id="DisclosureFairValueMeasurementsTables">
        <link:definition>3130 - Disclosure - FAIR VALUE MEASUREMENTS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureAcquisitionsTables" id="DisclosureAcquisitionsTables">
        <link:definition>3140 - Disclosure - ACQUISITIONS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureSegmentInformationTables" id="DisclosureSegmentInformationTables">
        <link:definition>3170 - Disclosure - SEGMENT INFORMATION (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureBasisOfPresentationDetails" id="DisclosureBasisOfPresentationDetails">
        <link:definition>4010 - Disclosure - BASIS OF PRESENTATION (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureAccountsReceivableAndAllowanceForDoubtfulAccountsDetails" id="DisclosureAccountsReceivableAndAllowanceForDoubtfulAccountsDetails">
        <link:definition>4020 - Disclosure - ACCOUNTS RECEIVABLE AND ALLOWANCE FOR DOUBTFUL ACCOUNTS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureAccountsReceivableAndAllowanceForDoubtfulAccountsDetails2" id="DisclosureAccountsReceivableAndAllowanceForDoubtfulAccountsDetails2">
        <link:definition>4021 - Disclosure - ACCOUNTS RECEIVABLE AND ALLOWANCE FOR DOUBTFUL ACCOUNTS (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureDiscontinuedOperationsDetails" id="DisclosureDiscontinuedOperationsDetails">
        <link:definition>4030 - Disclosure - DISCONTINUED OPERATIONS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureImpairmentAndRestructuringChargesDetails" id="DisclosureImpairmentAndRestructuringChargesDetails">
        <link:definition>4040 - Disclosure - IMPAIRMENT AND RESTRUCTURING CHARGES (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureImpairmentAndRestructuringChargesDetails2" id="DisclosureImpairmentAndRestructuringChargesDetails2">
        <link:definition>4041 - Disclosure - IMPAIRMENT AND RESTRUCTURING CHARGES (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureLongTermDebtAndLeaseObligationsDetails" id="DisclosureLongTermDebtAndLeaseObligationsDetails">
        <link:definition>4050 - Disclosure - LONG-TERM DEBT AND LEASE OBLIGATIONS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureLongTermDebtAndLeaseObligationsDetails2" id="DisclosureLongTermDebtAndLeaseObligationsDetails2">
        <link:definition>4051 - Disclosure - LONG-TERM DEBT AND LEASE OBLIGATIONS (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureLongTermDebtAndLeaseObligationsDetails3" id="DisclosureLongTermDebtAndLeaseObligationsDetails3">
        <link:definition>4052 - Disclosure - LONG-TERM DEBT AND LEASE OBLIGATIONS (Details 3)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureGuaranteesDetails" id="DisclosureGuaranteesDetails">
        <link:definition>4060 - Disclosure - GUARANTEES (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEmployeeBenefitPlansDetails" id="DisclosureEmployeeBenefitPlansDetails">
        <link:definition>4070 - Disclosure - EMPLOYEE BENEFIT PLANS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEmployeeBenefitPlansDetails2" id="DisclosureEmployeeBenefitPlansDetails2">
        <link:definition>4071 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEmployeeBenefitPlansDetails3" id="DisclosureEmployeeBenefitPlansDetails3">
        <link:definition>4072 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 3)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEmployeeBenefitPlansDetails4" id="DisclosureEmployeeBenefitPlansDetails4">
        <link:definition>4073 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 4)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEquityDetails" id="DisclosureEquityDetails">
        <link:definition>4080 - Disclosure - EQUITY (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEquityDetails2" id="DisclosureEquityDetails2">
        <link:definition>4081 - Disclosure - EQUITY (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEquityDetails3" id="DisclosureEquityDetails3">
        <link:definition>4082 - Disclosure - EQUITY (Details 3)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosurePropertyAndProfessionalAndGeneralLiabilityInsuranceDetails" id="DisclosurePropertyAndProfessionalAndGeneralLiabilityInsuranceDetails">
        <link:definition>4090 - Disclosure - PROPERTY AND PROFESSIONAL AND GENERAL LIABILITY INSURANCE (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureClaimsAndLawsuitsDetails" id="DisclosureClaimsAndLawsuitsDetails">
        <link:definition>4100 - Disclosure - CLAIMS AND LAWSUITS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureClaimsAndLawsuitsDetails2" id="DisclosureClaimsAndLawsuitsDetails2">
        <link:definition>4101 - Disclosure - CLAIMS AND LAWSUITS (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureIncomeTaxesDetails" id="DisclosureIncomeTaxesDetails">
        <link:definition>4110 - Disclosure - INCOME TAXES (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEarningsPerCommonShareDetails" id="DisclosureEarningsPerCommonShareDetails">
        <link:definition>4120 - Disclosure - EARNINGS PER COMMON SHARE (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureFairValueMeasurementsDetails" id="DisclosureFairValueMeasurementsDetails">
        <link:definition>4130 - Disclosure - FAIR VALUE MEASUREMENTS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureAcquisitionsDetails" id="DisclosureAcquisitionsDetails">
        <link:definition>4140 - Disclosure - ACQUISITIONS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureSubsequentEventsDetails" id="DisclosureSubsequentEventsDetails">
        <link:definition>4160 - Disclosure - SUBSEQUENT EVENTS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureSegmentInformationDetails" id="DisclosureSegmentInformationDetails">
        <link:definition>4170 - Disclosure - SEGMENT INFORMATION (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureSignificantAccountingPolicies" id="DisclosureSignificantAccountingPolicies">
        <link:definition>8010 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosurePropertyAndEquipmentTables" id="DisclosurePropertyAndEquipmentTables">
        <link:definition>8040 - Disclosure - PROPERTY AND EQUIPMENT (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosurePropertyAndEquipmentDetails" id="DisclosurePropertyAndEquipmentDetails">
        <link:definition>8050 - Disclosure - PROPERTY AND EQUIPMENT (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureGoodwillAndOtherIntangibleAssetsTables" id="DisclosureGoodwillAndOtherIntangibleAssetsTables">
        <link:definition>8060 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureGoodwillAndOtherIntangibleAssetsDetails" id="DisclosureGoodwillAndOtherIntangibleAssetsDetails">
        <link:definition>8070 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureInvestmentsAndOtherAssetsTables" id="DisclosureInvestmentsAndOtherAssetsTables">
        <link:definition>8080 - Disclosure - INVESTMENTS AND OTHER ASSETS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureInvestmentsAndOtherAssetsDetails" id="DisclosureInvestmentsAndOtherAssetsDetails">
        <link:definition>8090 - Disclosure - INVESTMENTS AND OTHER ASSETS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureAccumulatedOtherComprehensiveLossTables" id="DisclosureAccumulatedOtherComprehensiveLossTables">
        <link:definition>8100 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureAccumulatedOtherComprehensiveLossDetails" id="DisclosureAccumulatedOtherComprehensiveLossDetails">
        <link:definition>8110 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureSaleOfInvestmentDetails" id="DisclosureSaleOfInvestmentDetails">
        <link:definition>8120 - Disclosure - SALE OF INVESTMENT (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureOtherCurrentAssetsTables" id="DisclosureOtherCurrentAssetsTables">
        <link:definition>8130 - Disclosure - OTHER CURRENT ASSETS (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureOtherCurrentAssetsDetails" id="DisclosureOtherCurrentAssetsDetails">
        <link:definition>8140 - Disclosure - OTHER CURRENT ASSETS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureBasisOfPresentationDetails2" id="DisclosureBasisOfPresentationDetails2">
        <link:definition>8150 - Disclosure - BASIS OF PRESENTATION (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureBasisOfPresentationDetails4" id="DisclosureBasisOfPresentationDetails4">
        <link:definition>8160 - Disclosure - BASIS OF PRESENTATION (Details 3)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureScheduleIIValuationAndQualifyingAccountsDetails" id="DisclosureScheduleIIValuationAndQualifyingAccountsDetails">
        <link:definition>8170 - Disclosure - SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureLongTermDebtAndLeaseObligationsDetails4" id="DisclosureLongTermDebtAndLeaseObligationsDetails4">
        <link:definition>8180 - Disclosure - LONG-TERM DEBT AND LEASE OBLIGATIONS (Details 4)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureOtherCurrentAssets" id="DisclosureOtherCurrentAssets">
        <link:definition>8190 - Disclosure - OTHER CURRENT ASSETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosurePropertyAndEquipment" id="DisclosurePropertyAndEquipment">
        <link:definition>8200 - Disclosure - PROPERTY AND EQUIPMENT</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEmployeeBenefitPlansDetails7" id="DisclosureEmployeeBenefitPlansDetails7">
        <link:definition>8210 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 7)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureEmployeeBenefitPlansDetails6" id="DisclosureEmployeeBenefitPlansDetails6">
        <link:definition>8220 - Disclosure - EMPLOYEE BENEFIT PLANS (Details 6)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureInvestmentsAndOtherAssets" id="DisclosureInvestmentsAndOtherAssets">
        <link:definition>8230 - Disclosure - INVESTMENTS AND OTHER ASSETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureGoodwillAndOtherIntangibleAssets" id="DisclosureGoodwillAndOtherIntangibleAssets">
        <link:definition>8240 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureAccumulatedOtherComprehensiveLoss" id="DisclosureAccumulatedOtherComprehensiveLoss">
        <link:definition>8250 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE LOSS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureIncomeTaxesDetails7" id="DisclosureIncomeTaxesDetails7">
        <link:definition>8260 - Disclosure - INCOME TAXES (Details 7)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureIncomeTaxesDetails2" id="DisclosureIncomeTaxesDetails2">
        <link:definition>8270 - Disclosure - INCOME TAXES (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureIncomeTaxesDetails4" id="DisclosureIncomeTaxesDetails4">
        <link:definition>8280 - Disclosure - INCOME TAXES (Details 4)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureIncomeTaxesDetails5" id="DisclosureIncomeTaxesDetails5">
        <link:definition>8290 - Disclosure - INCOME TAXES (Details 5)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureIncomeTaxesDetails6" id="DisclosureIncomeTaxesDetails6">
        <link:definition>8300 - Disclosure - INCOME TAXES (Details 6)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureIncomeTaxesTables" id="DisclosureIncomeTaxesTables">
        <link:definition>8310 - Disclosure - INCOME TAXES (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/StatementOfStockholdersEquity" id="StatementOfStockholdersEquity">
        <link:definition>8320 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureSaleOfInvestment" id="DisclosureSaleOfInvestment">
        <link:definition>8330 - Disclosure - SALE OF INVESTMENT</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureSelectedQuarterlyFinancialData" id="DisclosureSelectedQuarterlyFinancialData">
        <link:definition>8340 - Disclosure - SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureScheduleIIValuationAndQualifyingAccounts" id="DisclosureScheduleIIValuationAndQualifyingAccounts">
        <link:definition>8350 - Disclosure - SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType roleURI="http://www.tenethealth.com/role/DisclosureIncomeTaxesDetailsCalc2" id="DisclosureIncomeTaxesDetailsCalc2">
        <link:definition>8360 - Disclosure - INCOME TAXES (Details) (Calc 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
  <xsd:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd" />
  <xsd:import namespace="http://fasb.org/us-gaap/2011-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2011/elts/us-gaap-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/dei/2011-01-31" schemaLocation="http://xbrl.sec.gov/dei/2011/dei-2011-01-31.xsd" />
  <xsd:import namespace="http://fasb.org/us-types/2011-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2011/elts/us-types-2011-01-31.xsd" />
  <xsd:import namespace="http://xbrl.sec.gov/stpr/2011-01-31" schemaLocation="http://xbrl.sec.gov/stpr/2011/stpr-2011-01-31.xsd" />
  <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" />
  <xsd:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
  <xsd:element name="PercentageOfMandatoryConvertibleShares" id="thc_PercentageOfMandatoryConvertibleShares" type="num:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="PreferredStockSevenPercentMandatoryConvertibleSharesRetired" id="thc_PreferredStockSevenPercentMandatoryConvertibleSharesRetired" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PreferredStockSevenPercentMandatoryConvertibleSharesIssued" id="thc_PreferredStockSevenPercentMandatoryConvertibleSharesIssued" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="DiscontinuedOperationRestructuringSettlementAndImpairmentProvisionsBeforeIncomeTax" id="thc_DiscontinuedOperationRestructuringSettlementAndImpairmentProvisionsBeforeIncomeTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="HealthCareOrganizationRevenueGross" id="thc_HealthCareOrganizationRevenueGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDecreaseInInventoriesAndOtherAssetsCurrent" id="thc_IncreaseDecreaseInInventoriesAndOtherAssetsCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="PaymentsForRestructuringAndLitigationCosts" id="thc_PaymentsForRestructuringAndLitigationCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="PaymentsToAcquirePropertyPlantAndEquipmentForContinuingOperations" id="thc_PaymentsToAcquirePropertyPlantAndEquipmentForContinuingOperations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ConstructionOfNewAndReplacementHospitals" id="thc_ConstructionOfNewAndReplacementHospitals" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="PaymentsToAcquirePropertyPlantAndEquipmentForDiscontinuedOperations" id="thc_PaymentsToAcquirePropertyPlantAndEquipmentForDiscontinuedOperations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ProceedsFromSaleOfMarketableSecuritiesLongTermInvestmentsAndOtherAssets" id="thc_ProceedsFromSaleOfMarketableSecuritiesLongTermInvestmentsAndOtherAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="DistributionsReceivedFromReclassificationOfReserveFund" id="thc_DistributionsReceivedFromReclassificationOfReserveFund" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ProceedsFromInterestRateSwapAgreement" id="thc_ProceedsFromInterestRateSwapAgreement" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="PropertyProfessionalAndGeneralLiabilityInsuranceDisclosureTextBlock" id="thc_PropertyProfessionalAndGeneralLiabilityInsuranceDisclosureTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PropertyAndProfessionalAndGeneralLiabilityInsuranceDisclosureAbstract" id="thc_PropertyAndProfessionalAndGeneralLiabilityInsuranceDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DocumentAndEntityInformationAbstract" id="thc_DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LongTermDebtIssueCostsMember" id="thc_LongTermDebtIssueCostsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MedicareMember" id="thc_MedicareMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MedicaidMember" id="thc_MedicaidMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ManagedCareMember" id="thc_ManagedCareMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IndemnitySelfPayAndOtherMember" id="thc_IndemnitySelfPayAndOtherMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AcuteCareHospitalsOtherRevenueMember" id="thc_AcuteCareHospitalsOtherRevenueMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherOperationsMember" id="thc_OtherOperationsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InvestmentsAndOtherNoncurrentAssetsTableTextBlock" id="thc_InvestmentsAndOtherNoncurrentAssetsTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LongTermInvestmentsAndOtherAssetsAbstract" id="thc_LongTermInvestmentsAndOtherAssetsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SummaryOfSignificantAccountingPoliciesLineItems" id="thc_SummaryOfSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LandHeldForExpansionLongTermReceivablesAndOtherAssetsNoncurrent" id="thc_LandHeldForExpansionLongTermReceivablesAndOtherAssetsNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="ScheduleOfClassificationOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" id="thc_ScheduleOfClassificationOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxReconciliationPriorYearIncomeTaxesAndChangeInDeferredTaxes" id="thc_IncomeTaxReconciliationPriorYearIncomeTaxesAndChangeInDeferredTaxes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="DeferredTaxAssetsOtherLongTermLiabilities" id="thc_DeferredTaxAssetsOtherLongTermLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="DeferredTaxAssetsInvestmentsAndOtherAssets" id="thc_DeferredTaxAssetsInvestmentsAndOtherAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="IncomeTaxExpenseBenefitChangeInValuationAllowanceOfDeferredTaxAssetsAndOtherTaxAdjustments" id="thc_IncomeTaxExpenseBenefitChangeInValuationAllowanceOfDeferredTaxAssetsAndOtherTaxAdjustments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxExpenseBenefitChangeInEstimatedLiabilitiesForUncertainTaxPositions" id="thc_IncomeTaxExpenseBenefitChangeInEstimatedLiabilitiesForUncertainTaxPositions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxExpenseBenefitTerminationOfCompanyOwnedLifeInsurancePolicies" id="thc_IncomeTaxExpenseBenefitTerminationOfCompanyOwnedLifeInsurancePolicies" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDecreaseInEstimatedLiabilitiesForUncertainTaxPositions" id="thc_IncreaseDecreaseInEstimatedLiabilitiesForUncertainTaxPositions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxExaminationTaxDeficiencyAssertedByIncomeTaxAuthority" id="thc_IncomeTaxExaminationTaxDeficiencyAssertedByIncomeTaxAuthority" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="AlternativeMinimumTaxCreditMember" id="thc_AlternativeMinimumTaxCreditMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OperatingLossCarryforwardLimitationOnUseMeasurementPeriod" id="thc_OperatingLossCarryforwardLimitationOnUseMeasurementPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OperatingLossCarryforwardLimitationOnUsePercentOfShareholders" id="thc_OperatingLossCarryforwardLimitationOnUsePercentOfShareholders" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OperatingLossCarryforwardLimitationOnUseMaximumChangeIncreaseInOwnership" id="thc_OperatingLossCarryforwardLimitationOnUseMaximumChangeIncreaseInOwnership" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MembershipInterestPercentage" id="thc_MembershipInterestPercentage" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfHospitalsOperatedBySubsidiaries" id="thc_NumberOfHospitalsOperatedBySubsidiaries" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfReportableSegments" id="thc_NumberOfReportableSegments" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfAcademicMedicalCentersOperatedBySubsidiaries" id="thc_NumberOfAcademicMedicalCentersOperatedBySubsidiaries" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfLicensedBedsInHospitalsOperatedBySubsidiaries" id="thc_NumberOfLicensedBedsInHospitalsOperatedBySubsidiaries" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfStatesInWhichSubsidiariesOfEntityOperateHospitals" id="thc_NumberOfStatesInWhichSubsidiariesOfEntityOperateHospitals" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfHospitalsOwnedBySubsidiaries" id="thc_NumberOfHospitalsOwnedBySubsidiaries" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfHospitalsLeasedBySubsidiariesFromThirdParties" id="thc_NumberOfHospitalsLeasedBySubsidiariesFromThirdParties" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfStatesInWhichSubsidiariesOperateHospitals" id="thc_NumberOfStatesInWhichSubsidiariesOperateHospitals" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfFreeStandingAndProviderBasedDiagnosticImagingCentersAndAmbulatorySurgeryCentersOperatedBySubsidiariesExcludingClassifiedInDiscontinuedOperations" id="thc_NumberOfFreeStandingAndProviderBasedDiagnosticImagingCentersAndAmbulatorySurgeryCentersOperatedBySubsidiariesExcludingClassifiedInDiscontinuedOperations" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfMedicalOfficeBuildingsOwnedOrLeasedAndOperatedBySubsidiaries" id="thc_NumberOfMedicalOfficeBuildingsOwnedOrLeasedAndOperatedBySubsidiaries" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfAcademicMedicalCentersOperatedByTheSubsidiaries" id="thc_NumberOfAcademicMedicalCentersOperatedByTheSubsidiaries" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfFreeStandingAndProviderBasedDiagnosticImagingCentersAndAmbulatorySurgeryCentersOperatedBySubsidiaries" id="thc_NumberOfFreeStandingAndProviderBasedDiagnosticImagingCentersAndAmbulatorySurgeryCentersOperatedBySubsidiaries" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfFreeStandingAndProviderBasedDiagnosticImagingCentersAndAmbulatorySurgeryCentersClassifiedInDiscontinuedOperations" id="thc_NumberOfFreeStandingAndProviderBasedDiagnosticImagingCentersAndAmbulatorySurgeryCentersClassifiedInDiscontinuedOperations" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfFreeStandingEmergencyDepartment" id="thc_NumberOfFreeStandingEmergencyDepartment" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfStatesInWhichFreeStandingAndProviderBasedDiagnosticImagingCentersAndAmbulatorySurgeryCentersOperatedBySubsidiaries" id="thc_NumberOfStatesInWhichFreeStandingAndProviderBasedDiagnosticImagingCentersAndAmbulatorySurgeryCentersOperatedBySubsidiaries" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfHospitalsToWhichSegmentOfTheEntityProvidesRevenueCycleServices" id="thc_NumberOfHospitalsToWhichSegmentOfTheEntityProvidesRevenueCycleServices" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CoreServicesSegmentMember" id="thc_CoreServicesSegmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CoreServicesAndOtherSegmentMember" id="thc_CoreServicesAndOtherSegmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ConiferSegmentMember" id="thc_ConiferSegmentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GrantDate4November2011Member" id="thc_GrantDate4November2011Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GrantDate23February2011Member" id="thc_GrantDate23February2011Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="RestrictedStockUnitsRSUVestedToDirectorsMember" id="thc_RestrictedStockUnitsRSUVestedToDirectorsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AdjustedEarningsBeforeInterestTaxDepreciationAndAmortization" id="thc_AdjustedEarningsBeforeInterestTaxDepreciationAndAmortization" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="HealthCareOrganizationRevenueCycleAndPatientCommunicationsServiceRevenue" id="thc_HealthCareOrganizationRevenueCycleAndPatientCommunicationsServiceRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="AdjustedSegmentEBITDAAbstract" id="thc_AdjustedSegmentEBITDAAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AdjustedEarningsBeforeInterestTaxDepreciationAndAmortizationAbstract" id="thc_AdjustedEarningsBeforeInterestTaxDepreciationAndAmortizationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PhysicianReceivablesAndRelocationAgreementsCurrent" id="thc_PhysicianReceivablesAndRelocationAgreementsCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="PhysicianAndGroupCoverageGuaranteesCurrent" id="thc_PhysicianAndGroupCoverageGuaranteesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="DisproportionateShareHospitalRevenueReceivablesCurrent" id="thc_DisproportionateShareHospitalRevenueReceivablesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="SubleaseReceivablesCurrent" id="thc_SubleaseReceivablesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardByGrantDateDisclosureTableTextBlock" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardByGrantDateDisclosureTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfShareBasedCompensationStockOptionsByMonetaryStatusAndEmploymentStatusTableTextBlock" id="thc_ScheduleOfShareBasedCompensationStockOptionsByMonetaryStatusAndEmploymentStatusTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfNetFundedStatusAmountsRecognizedInBalanceSheetAndAssumptionsUsedForProjectedBenefitObligationsTableTextBlock" id="thc_ScheduleOfNetFundedStatusAmountsRecognizedInBalanceSheetAndAssumptionsUsedForProjectedBenefitObligationsTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StockIncentivePlan2008Member" id="thc_StockIncentivePlan2008Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardByGrantDateDomain" id="thc_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardByGrantDateDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GrantDate25February2010Member" id="thc_GrantDate25February2010Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GrantDate26February2009OneMember" id="thc_GrantDate26February2009OneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GrantDate26February2009TwoMember" id="thc_GrantDate26February2009TwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GrantDate6March2008Member" id="thc_GrantDate6March2008Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GrantDate6May2010Member" id="thc_GrantDate6May2010Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GrantDate1March2007Member" id="thc_GrantDate1March2007Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GrantDateOtherMember" id="thc_GrantDateOtherMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardByGrantDateAxis" id="thc_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardByGrantDateAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardConvertibleInNumberOfShares" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardConvertibleInNumberOfShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantDateDisclosureAbstract" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantDateDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingLifeAbstract" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingLifeAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodNumberOfEmployees" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodNumberOfEmployees" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitureRate" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedForfeitureRate" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsEarlyExerciseThreshold" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsEarlyExerciseThreshold" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsEarlyExerciseRate" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsEarlyExerciseRate" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ExercisePriceRangeOneMember" id="thc_ExercisePriceRangeOneMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ExercisePriceRangeSixMember" id="thc_ExercisePriceRangeSixMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ExercisePriceRangeTwoMember" id="thc_ExercisePriceRangeTwoMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ExercisePriceRangeThreeMember" id="thc_ExercisePriceRangeThreeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ExercisePriceRangeFourMember" id="thc_ExercisePriceRangeFourMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ExercisePriceRangeFiveMember" id="thc_ExercisePriceRangeFiveMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeEndOfPeriodOptionsExercisableAbstract" id="thc_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeEndOfPeriodOptionsExercisableAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InTheMoneyOptionsStockOptionsMember" id="thc_InTheMoneyOptionsStockOptionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OutOfTheMoneyOptionsStockOptionsMember" id="thc_OutOfTheMoneyOptionsStockOptionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EmploymentStatusAxis" id="thc_EmploymentStatusAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EmploymentStatusDomain" id="thc_EmploymentStatusDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CurrentEmployeeMember" id="thc_CurrentEmployeeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="FormerEmployeeMember" id="thc_FormerEmployeeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingPercentage" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingPercentage" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingPercentageOfTotal" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingPercentageOfTotal" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TimeBasedRestrictedStockUnitsRSUMember" id="thc_TimeBasedRestrictedStockUnitsRSUMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PerformanceBasedRestrictedStockUnitsRSUMember" id="thc_PerformanceBasedRestrictedStockUnitsRSUMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPurchasePriceOfCommonStockPercent" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardPurchasePriceOfCommonStockPercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardContributionByEligibleEmployeePercent" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardContributionByEligibleEmployeePercent" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardRequisiteHoldingPeriodOfShares" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardRequisiteHoldingPeriodOfShares" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumFairMarketValueOfSharesPerEmployee" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumFairMarketValueOfSharesPerEmployee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="EmployeeStockPurchasePlansActivityAbstract" id="thc_EmployeeStockPurchasePlansActivityAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StockIssuedDuringPeriodValuePerShareEmployeeStockPurchasePlan" id="thc_StockIssuedDuringPeriodValuePerShareEmployeeStockPurchasePlan" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DefinedContributionPlanEmployeeContributionPercentageMinimum" id="thc_DefinedContributionPlanEmployeeContributionPercentageMinimum" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DefinedContributionPlanEmployeeContributionPercentageMaximum" id="thc_DefinedContributionPlanEmployeeContributionPercentageMaximum" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DefinedContributionPlanRequisiteWorkingPeriodPerYearMinimum" id="thc_DefinedContributionPlanRequisiteWorkingPeriodPerYearMinimum" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DefinedContributionPlanEmployerMatchingContributionBeforeReduction" id="thc_DefinedContributionPlanEmployerMatchingContributionBeforeReduction" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DefinedContributionPlanEmployerMatchingContributionAfterReduction" id="thc_DefinedContributionPlanEmployerMatchingContributionAfterReduction" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DefinedBenefitPlanExpectedFutureBenefitPayments" id="thc_DefinedBenefitPlanExpectedFutureBenefitPayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="CapitalExpendituresIncurredButNotYetPaidCurrent" id="thc_CapitalExpendituresIncurredButNotYetPaidCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="TimeBasedStockOptionsMember" id="thc_TimeBasedStockOptionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PerformanceBasedStockOptionsMember" id="thc_PerformanceBasedStockOptionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommonStockFairValuePerShare" id="thc_CommonStockFairValuePerShare" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="DefinedBenefitPensionPlanActiveNumber" id="thc_DefinedBenefitPensionPlanActiveNumber" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DefinedBenefitPensionPlanFrozenNumber" id="thc_DefinedBenefitPensionPlanFrozenNumber" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DefinedBenefitPensionPlansAbstract" id="thc_DefinedBenefitPensionPlansAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ValuationAllowancesAndReservesReservesOfBusinessesSold" id="thc_ValuationAllowancesAndReservesReservesOfBusinessesSold" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="LeaseTerminationCosts" id="thc_LeaseTerminationCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ImpairmentChargeOnMedicalOfficeBuildingsSold" id="thc_ImpairmentChargeOnMedicalOfficeBuildingsSold" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NumberOfMedicalOfficeBuildingsImpaired" id="thc_NumberOfMedicalOfficeBuildingsImpaired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SeveranceCostsAndOtherRestructuringCosts" id="thc_SeveranceCostsAndOtherRestructuringCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ImpairmentCreditsRelatedToCollectionOfNotesReceivable" id="thc_ImpairmentCreditsRelatedToCollectionOfNotesReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ImpairmentChargeOnLandAndBuildingsRelatedToCampusToBeReplacedByNewCampusInNextYear" id="thc_ImpairmentChargeOnLandAndBuildingsRelatedToCampusToBeReplacedByNewCampusInNextYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ImpairmentChargeOnNotesReceivable" id="thc_ImpairmentChargeOnNotesReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="LeaseAndOtherCostsAndEmployeeSeveranceRelatedCostsMember" id="thc_LeaseAndOtherCostsAndEmployeeSeveranceRelatedCostsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EmployeeSeveranceRelatedCostsAndOtherEstimatedCostsMember" id="thc_EmployeeSeveranceRelatedCostsAndOtherEstimatedCostsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CashPaymentsToBeAppliedAgainstAccrualsDueWithinOneYear" id="thc_CashPaymentsToBeAppliedAgainstAccrualsDueWithinOneYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="CashPaymentsToBeAppliedAgainstAccrualsDueThereafter" id="thc_CashPaymentsToBeAppliedAgainstAccrualsDueThereafter" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfMaturitiesOfLongTermDebtAndFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" id="thc_ScheduleOfMaturitiesOfLongTermDebtAndFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrument6.375PercentSeniorNotesDue2011Member" id="thc_DebtInstrument6.375PercentSeniorNotesDue2011Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrument6.5PercentSeniorNotesDue2012Member" id="thc_DebtInstrument6.5PercentSeniorNotesDue2012Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrument7.375PercentSeniorNotesDue2013Member" id="thc_DebtInstrument7.375PercentSeniorNotesDue2013Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrument9.875PercentSeniorNotesDue2014Member" id="thc_DebtInstrument9.875PercentSeniorNotesDue2014Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrument9.25PercentSeniorNotesDue2015Member" id="thc_DebtInstrument9.25PercentSeniorNotesDue2015Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrument8PercentSeniorNotesDue2020Member" id="thc_DebtInstrument8PercentSeniorNotesDue2020Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrument6.875PercentSeniorNotesDue2031Member" id="thc_DebtInstrument6.875PercentSeniorNotesDue2031Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrument9PercentSeniorNotesDue2015Member" id="thc_DebtInstrument9PercentSeniorNotesDue2015Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrument9PercentSeniorSecuredNotesDue2015Member" id="thc_DebtInstrument9PercentSeniorSecuredNotesDue2015Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrument10PercentSeniorSecuredNotesDue2018Member" id="thc_DebtInstrument10PercentSeniorSecuredNotesDue2018Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrument8.875PercentSeniorSecuredNotesDue2019Member" id="thc_DebtInstrument8.875PercentSeniorSecuredNotesDue2019Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrument6.25PercentSeniorNotesDue2018Member" id="thc_DebtInstrument6.25PercentSeniorNotesDue2018Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CreditFacilityDue2016Member" id="thc_CreditFacilityDue2016Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrument10PercentSeniorNotesDue2018Member" id="thc_DebtInstrument10PercentSeniorNotesDue2018Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrument8.875PercentSeniorNotesDue2019Member" id="thc_DebtInstrument8.875PercentSeniorNotesDue2019Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentVariableRateBaseAxis" id="thc_DebtInstrumentVariableRateBaseAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentAgreementPeriodAxis" id="thc_DebtInstrumentAgreementPeriodAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentVariableRateBaseDomain" id="thc_DebtInstrumentVariableRateBaseDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentAgreementPeriodDomain" id="thc_DebtInstrumentAgreementPeriodDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentVariableRateBaseBaseRateMember" id="thc_DebtInstrumentVariableRateBaseBaseRateMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InitialSixMonthsPeriodMember" id="thc_InitialSixMonthsPeriodMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PeriodAfterInitialSixMonthsMember" id="thc_PeriodAfterInitialSixMonthsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentVariableRateBaseLIBORMember" id="thc_DebtInstrumentVariableRateBaseLIBORMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LineOfCreditFacilitySubfacilityForStandbyLettersOfCreditMaximumAvailableCapacity" id="thc_LineOfCreditFacilitySubfacilityForStandbyLettersOfCreditMaximumAvailableCapacity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="DebtInstrumentOutstandingPrincipalAmountThatMustBeRepaidOrRefinancedToExtendMaturityDateOfCreditFacility" id="thc_DebtInstrumentOutstandingPrincipalAmountThatMustBeRepaidOrRefinancedToExtendMaturityDateOfCreditFacility" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LineOfCreditFacilityAccelerationClausePercentageOfAggregateNotesRepaid" id="thc_LineOfCreditFacilityAccelerationClausePercentageOfAggregateNotesRepaid" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LineOfCreditFacilityAccelerationClausePeriodPriorToMaturityOfDebtInstrument" id="thc_LineOfCreditFacilityAccelerationClausePeriodPriorToMaturityOfDebtInstrument" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentRedemptionPriceAsPercentageOfPrincipalAmount" id="thc_DebtInstrumentRedemptionPriceAsPercentageOfPrincipalAmount" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentRedemptionWithNetProceedsFromEquityOfferingsAsPercentageOfOriginalPrincipal" id="thc_DebtInstrumentRedemptionWithNetProceedsFromEquityOfferingsAsPercentageOfOriginalPrincipal" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentCovenantsAssetValueAsPercentageOfConsolidatedNetTangibleAssetsForPropertiesToBeDefinedAsPrincipalProperty" id="thc_DebtInstrumentCovenantsAssetValueAsPercentageOfConsolidatedNetTangibleAssetsForPropertiesToBeDefinedAsPrincipalProperty" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="DebtInstrumentCovenantsThresholdLimitForSecuredDebt" id="thc_DebtInstrumentCovenantsThresholdLimitForSecuredDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentCovenantsNumeratorOfSecuredDebtRatioForDebtSecuredByLienOnPar" id="thc_DebtInstrumentCovenantsNumeratorOfSecuredDebtRatioForDebtSecuredByLienOnPar" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentCovenantsDenominatorOfSecuredDebtRatioForDebtSecuredByLienOnPar" id="thc_DebtInstrumentCovenantsDenominatorOfSecuredDebtRatioForDebtSecuredByLienOnPar" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentCovenantsNumeratorOfSecuredDebtRatio" id="thc_DebtInstrumentCovenantsNumeratorOfSecuredDebtRatio" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentCovenantsDenominatorOfSecuredDebtRatio" id="thc_DebtInstrumentCovenantsDenominatorOfSecuredDebtRatio" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentCovenantsThresholdLimitForSecuredDebtSecuredByLienOnPar" id="thc_DebtInstrumentCovenantsThresholdLimitForSecuredDebtSecuredByLienOnPar" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentCovenantsSecuredDebtAsPercentageOfConsolidatedNetTangibleAssetsForPrincipalProperties" id="thc_DebtInstrumentCovenantsSecuredDebtAsPercentageOfConsolidatedNetTangibleAssetsForPrincipalProperties" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="LineOfCreditFacilityCovenantThresholdLimit" id="thc_LineOfCreditFacilityCovenantThresholdLimit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LineOfCreditFacilityCovenantUnusedBorrowingAvailabilityThresholdLimit" id="thc_LineOfCreditFacilityCovenantUnusedBorrowingAvailabilityThresholdLimit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="DebtInstrumentRedemptionPriceWithNetProceedsFromEquityOfferingsAsPercentageOfOriginalPrincipal" id="thc_DebtInstrumentRedemptionPriceWithNetProceedsFromEquityOfferingsAsPercentageOfOriginalPrincipal" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrumentRepurchaseObligationDueToChangeOfControlPercentageOfPrincipal" id="thc_DebtInstrumentRepurchaseObligationDueToChangeOfControlPercentageOfPrincipal" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CashInterestSavings" id="thc_CashInterestSavings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="MaturitiesOfLongTermDebtAndCapitalLeaseObligationsAbstract" id="thc_MaturitiesOfLongTermDebtAndCapitalLeaseObligationsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" id="thc_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo" id="thc_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree" id="thc_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour" id="thc_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive" id="thc_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive" id="thc_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="EstimatedFutureRecoveriesFromAccountsAssignedToConifer" id="thc_EstimatedFutureRecoveriesFromAccountsAssignedToConifer" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="NetCostReportSettlementsPayableAndValuationAllowances" id="thc_NetCostReportSettlementsPayableAndValuationAllowances" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="DisproportionateShareHospitalMember" id="thc_DisproportionateShareHospitalMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SelfPayPatientsMember" id="thc_SelfPayPatientsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SelfPayAfterInsuranceMember" id="thc_SelfPayAfterInsuranceMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SelfPayUninsuredPatientsMember" id="thc_SelfPayUninsuredPatientsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CharityCarePatientsMember" id="thc_CharityCarePatientsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EstimatedCollectionRateOnAccountsReceivable" id="thc_EstimatedCollectionRateOnAccountsReceivable" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfRepurchaseOfCommonStockTableTextBlock" id="thc_ScheduleOfRepurchaseOfCommonStockTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfNetOperatingRevenuesBeforeProvisionForDoubtfulAccountsTableTextBlock" id="thc_ScheduleOfNetOperatingRevenuesBeforeProvisionForDoubtfulAccountsTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StockRepurchaseProgramExpirationDate" id="thc_StockRepurchaseProgramExpirationDate" type="us-types:dateStringItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfStockRepurchaseProgramTable" id="thc_ScheduleOfStockRepurchaseProgramTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StockRepurchaseProgramAxis" id="thc_StockRepurchaseProgramAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="StockRepurchaseProgramDomain" id="thc_StockRepurchaseProgramDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PubliclyAnnouncedProgramMember" id="thc_PubliclyAnnouncedProgramMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AllowanceForDoubtfulAccountsLookbackPeriodUsedAsBasisForEstimate" id="thc_AllowanceForDoubtfulAccountsLookbackPeriodUsedAsBasisForEstimate" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfEligibleClassMembers" id="thc_NumberOfEligibleClassMembers" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfPersonsInClassActionLawsuits" id="thc_NumberOfPersonsInClassActionLawsuits" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfPersonsIdentifiedInClassCertificationProcess" id="thc_NumberOfPersonsIdentifiedInClassCertificationProcess" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfFacilities" id="thc_NumberOfFacilities" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfHospitalsUnderMedicareClaimsReview" id="thc_NumberOfHospitalsUnderMedicareClaimsReview" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MemorialMedicalCenterMember" id="thc_MemorialMedicalCenterMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LindyBoggsMember" id="thc_LindyBoggsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OrdinaryCourseMattersMember" id="thc_OrdinaryCourseMattersMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IndividualHurricaneKatrinaRelatedLawsuitsMember" id="thc_IndividualHurricaneKatrinaRelatedLawsuitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareholderSuitsMember" id="thc_ShareholderSuitsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GovernmentalReviewsMember" id="thc_GovernmentalReviewsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PendingWageAndHourActionsMember" id="thc_PendingWageAndHourActionsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MeadowcrestHospitalAndKennerRegionalMedicalCenterMember" id="thc_MeadowcrestHospitalAndKennerRegionalMedicalCenterMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CapacityToTreatPatientsOnOutpatientBasis" id="thc_CapacityToTreatPatientsOnOutpatientBasis" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LegalCostsAndTransfersOther" id="thc_LegalCostsAndTransfersOther" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="EffectOfDilutiveStockOptionsRestrictedStockUnitsAndMandatoryConvertiblePreferredStockPerShareAmount" id="thc_EffectOfDilutiveStockOptionsRestrictedStockUnitsAndMandatoryConvertiblePreferredStockPerShareAmount" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DiagnosticImagingCenterMember" id="thc_DiagnosticImagingCenterMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OncologyCenterMember" id="thc_OncologyCenterMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PhysicianPracticeEntityMember" id="thc_PhysicianPracticeEntityMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OutpatientCenterMember" id="thc_OutpatientCenterMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherDiagnosticImagingCenterMember" id="thc_OtherDiagnosticImagingCenterMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AmbulatorySurgeryCentersMember" id="thc_AmbulatorySurgeryCentersMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherAmbulatorySurgeryCentersMember" id="thc_OtherAmbulatorySurgeryCentersMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="Acquisitions2010Member" id="thc_Acquisitions2010Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BusinessAcquisitionPurchasePriceAllocationRedeemableNoncontrollingInterestsInEquityOfConsolidatedSubsidiaries" id="thc_BusinessAcquisitionPurchasePriceAllocationRedeemableNoncontrollingInterestsInEquityOfConsolidatedSubsidiaries" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="BusinessAcquisitionPurchasePriceAllocationNoncontrollingInterests" id="thc_BusinessAcquisitionPurchasePriceAllocationNoncontrollingInterests" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="IncomeGuaranteeMember" id="thc_IncomeGuaranteeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GuaranteedMinimumRentMember" id="thc_GuaranteedMinimumRentMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncomeAndRevenueCollectionGuaranteeMember" id="thc_IncomeAndRevenueCollectionGuaranteeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommitmentPeriod" id="thc_CommitmentPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GuaranteeObligationPeriod" id="thc_GuaranteeObligationPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="GuaranteeObligationsForRecordedLiabilities" id="thc_GuaranteeObligationsForRecordedLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicyTextBlock" id="thc_ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AccrualsForGeneralAndProfessionalLiabilityRisksPolicyTextBlock" id="thc_AccrualsForGeneralAndProfessionalLiabilityRisksPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ElectronicHealthRecordIncentivesPolicyTextBlock" id="thc_ElectronicHealthRecordIncentivesPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DescriptionOfBusinessAbstract" id="thc_DescriptionOfBusinessAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ElectronicHealthRecordIncentivesAbstract" id="thc_ElectronicHealthRecordIncentivesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfCriticalAccessHospitalsOperatedBySubsidiaries" id="thc_NumberOfCriticalAccessHospitalsOperatedBySubsidiaries" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfHospitalsClassifiedInDiscontinuedOperations" id="thc_NumberOfHospitalsClassifiedInDiscontinuedOperations" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfLicensedBedsInHospitalsOperatedByTheSubsidiaries" id="thc_NumberOfLicensedBedsInHospitalsOperatedByTheSubsidiaries" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MedicareAndMedicaidNetPatientRevenueAbstract" id="thc_MedicareAndMedicaidNetPatientRevenueAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CostReportFilingPeriodAfterEndOfAnnualCostReportingPeriod" id="thc_CostReportFilingPeriodAfterEndOfAnnualCostReportingPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncreaseInRevenueDueToAdjustmentsForPriorYearCostReportsAndRelatedValuationAllowances" id="thc_IncreaseInRevenueDueToAdjustmentsForPriorYearCostReportsAndRelatedValuationAllowances" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="PercentageOfMedicaidIncentivePaymentsFederallyFunded" id="thc_PercentageOfMedicaidIncentivePaymentsFederallyFunded" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncentivePaymentsForTechnologyCertification" id="thc_IncentivePaymentsForTechnologyCertification" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="CashAndCashEquivalentsMaturityPeriod" id="thc_CashAndCashEquivalentsMaturityPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CashAndCashEquivalentsRelatedToCaptiveInsuranceSubsidiaries" id="thc_CashAndCashEquivalentsRelatedToCaptiveInsuranceSubsidiaries" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="RepatriatedCashFromSubsidiaries" id="thc_RepatriatedCashFromSubsidiaries" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="ProvisionForDoubtfulAccountsAbstract" id="thc_ProvisionForDoubtfulAccountsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ProvisionForDoubtfulAccountsLookBackPeriod" id="thc_ProvisionForDoubtfulAccountsLookBackPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PropertyPlantAndEquipmentAdditionsMinimumUsefulLife" id="thc_PropertyPlantAndEquipmentAdditionsMinimumUsefulLife" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AccrualsForGeneralAndProfessionalLiabilityRisksAbstract" id="thc_AccrualsForGeneralAndProfessionalLiabilityRisksAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SegmentReportingDisclosureAbstract" id="thc_SegmentReportingDisclosureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfBusinessLines" id="thc_NumberOfBusinessLines" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PercentageOfNetOperatingRevenuesGeneratedByGeneralHospitals" id="thc_PercentageOfNetOperatingRevenuesGeneratedByGeneralHospitals" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NorthShoreRegionalMedicalCenterMember" id="thc_NorthShoreRegionalMedicalCenterMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="IncreaseDecreaseInLongLivedAssetsEstimatedFairValue" id="thc_IncreaseDecreaseInLongLivedAssetsEstimatedFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="LitigationSettlementsNetOfInsuranceRecoveries" id="thc_LitigationSettlementsNetOfInsuranceRecoveries" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NumberOfLawsuits" id="thc_NumberOfLawsuits" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PreferredStockAndOtherSecuritiesHeldByCaptiveInsuranceSubsidiaries" id="thc_PreferredStockAndOtherSecuritiesHeldByCaptiveInsuranceSubsidiaries" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="EstimatedFairValueOfDebtInstrumentAsPercentageOfCarryingValue" id="thc_EstimatedFairValueOfDebtInstrumentAsPercentageOfCarryingValue" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="UnSolicitedProposalCashPerShare" id="thc_UnSolicitedProposalCashPerShare" type="num:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="NumberOfCandidatesNominatedForElectionToEntityBoardOfDirectors" id="thc_NumberOfCandidatesNominatedForElectionToEntityBoardOfDirectors" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CorporateIntegrityAgreementTerm" id="thc_CorporateIntegrityAgreementTerm" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LossContingencyNumberOfInpatientRehabilitationFacilitiesForExamineLimitedSampleOfPatientFiles" id="thc_LossContingencyNumberOfInpatientRehabilitationFacilitiesForExamineLimitedSampleOfPatientFiles" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LossContingencyNumberOfHospitalWherePersonsInjured" id="thc_LossContingencyNumberOfHospitalWherePersonsInjured" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PeriodForUseOfEHRTechnologyToBecomeEligibleForAnnualMedicareIncentivePayments" id="thc_PeriodForUseOfEHRTechnologyToBecomeEligibleForAnnualMedicareIncentivePayments" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SalesOfInvestmentsDisclosureTextBlock" id="thc_SalesOfInvestmentsDisclosureTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PropertyPlantAndEquipmentAdditionsMinimumValue" id="thc_PropertyPlantAndEquipmentAdditionsMinimumValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NetImpairmentAndRestructuringCostTable" id="thc_NetImpairmentAndRestructuringCostTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SummaryOfSignificantAccountingPoliciesTable" id="thc_SummaryOfSignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NetImpairmentAndRestructuringChargesByTypeAxis" id="thc_NetImpairmentAndRestructuringChargesByTypeAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NetImpairmentAndRestructuringChargesByTypeDomain" id="thc_NetImpairmentAndRestructuringChargesByTypeDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BuildingsAndEquipmentOfPreviouslyImpairedHospitalMember" id="thc_BuildingsAndEquipmentOfPreviouslyImpairedHospitalMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LeaseTerminationCostsMember" id="thc_LeaseTerminationCostsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherRelatedNetImpairmentAndRestructuringChargesMember" id="thc_OtherRelatedNetImpairmentAndRestructuringChargesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="BuildingsAndEquipmentAndOtherLongLivedAssetsMember" id="thc_BuildingsAndEquipmentAndOtherLongLivedAssetsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MedicalOfficeBuildingsSoldInFloridaMember" id="thc_MedicalOfficeBuildingsSoldInFloridaMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MedicalOfficeBuildingsSoldInTexasMember" id="thc_MedicalOfficeBuildingsSoldInTexasMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AcceleratedStockBasedCompensationCostsMember" id="thc_AcceleratedStockBasedCompensationCostsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EmployeeSeveranceAndOtherRelatedCostsMember" id="thc_EmployeeSeveranceAndOtherRelatedCostsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NoteReceivableFromBuyerOfPreviouslyDivestedHospitalMember" id="thc_NoteReceivableFromBuyerOfPreviouslyDivestedHospitalMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LandAndBuildingsAtCampusScheduledForRelocationMember" id="thc_LandAndBuildingsAtCampusScheduledForRelocationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="OtherAssetsRelatedToOptionPurchaseRealPropertyMember" id="thc_OtherAssetsRelatedToOptionPurchaseRealPropertyMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ImpairmentAndRestructuringLineItems" id="thc_ImpairmentAndRestructuringLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InsuranceCoverageTable" id="thc_InsuranceCoverageTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InsurancePolicyByTypeAxis" id="thc_InsurancePolicyByTypeAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InsurancePolicyPeriodAxis" id="thc_InsurancePolicyPeriodAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InsuranceCoverageLimitPerOccurrence" id="thc_InsuranceCoverageLimitPerOccurrence" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="InsuranceCoveragePerOccurrenceExcludingFloodsEarthquakesAndWindstorms" id="thc_InsuranceCoveragePerOccurrenceExcludingFloodsEarthquakesAndWindstorms" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="InsuranceCoverageAggregateSubLimitsForFloodsAndEarthquakes" id="thc_InsuranceCoverageAggregateSubLimitsForFloodsAndEarthquakes" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="FloodEarthquakeAndWindstormInsuranceDeductibleMinimum" id="thc_FloodEarthquakeAndWindstormInsuranceDeductibleMinimum" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="InsuranceCoverageTier1PercentReinsured" id="thc_InsuranceCoverageTier1PercentReinsured" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="InsuranceCoverageTier1PercentRetained" id="thc_InsuranceCoverageTier1PercentRetained" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="InsuranceCoverageTier2AdditionalToAggregateCoverage" id="thc_InsuranceCoverageTier2AdditionalToAggregateCoverage" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="InsuranceCoverageTier1MaximumAmountRetained" id="thc_InsuranceCoverageTier1MaximumAmountRetained" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="InsuranceCoverageTier1Amount" id="thc_InsuranceCoverageTier1Amount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="EarthquakeFaultInsuranceDeductibleMaximum" id="thc_EarthquakeFaultInsuranceDeductibleMaximum" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="OtherCoveredLossInsuranceDeductible" id="thc_OtherCoveredLossInsuranceDeductible" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="EarthquakeFaultInsuranceDeductibleMinimum" id="thc_EarthquakeFaultInsuranceDeductibleMinimum" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xsd:element name="FloodEarthquakeAndWindstormInsuranceDeductibleMaximum" id="thc_FloodEarthquakeAndWindstormInsuranceDeductibleMaximum" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="InsuranceCoveragePerOccurrenceSubLimitsForWindstorms" id="thc_InsuranceCoveragePerOccurrenceSubLimitsForWindstorms" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="InsurancePolicyByTypeDomain" id="thc_InsurancePolicyByTypeDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InsurancePolicyPeriodDomain" id="thc_InsurancePolicyPeriodDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="PropertyInsurancePoliciesMember" id="thc_PropertyInsurancePoliciesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="April2009ThroughMarch2010Member" id="thc_April2009ThroughMarch2010Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="April2010ThroughMarch2011Member" id="thc_April2010ThroughMarch2011Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="April2010ThroughMarch2013Member" id="thc_April2010ThroughMarch2013Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="April2011ThroughMarch2012Member" id="thc_April2011ThroughMarch2012Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="June2010ThroughMay2011Member" id="thc_June2010ThroughMay2011Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="June2011ThroughMay2012Member" id="thc_June2011ThroughMay2012Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="June12009ThroughMay312010Member" id="thc_June12009ThroughMay312010Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="June12008ThroughMay312009Member" id="thc_June12008ThroughMay312009Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ProfessionalAndGeneralLiabilityInsurancePoliciesMember" id="thc_ProfessionalAndGeneralLiabilityInsurancePoliciesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="InsuranceCoverageLineItems" id="thc_InsuranceCoverageLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DiscountRateTerm" id="thc_DiscountRateTerm" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MalpracticeInsuranceSelfInsuredHospitalStatus" id="thc_MalpracticeInsuranceSelfInsuredHospitalStatus" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="MalpracticeInsuranceSelfInsuredCaptiveSubsidiaryStatus" id="thc_MalpracticeInsuranceSelfInsuredCaptiveSubsidiaryStatus" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="InsuranceCoverageTier1AdditionalToAggregateSelfCoverage" id="thc_InsuranceCoverageTier1AdditionalToAggregateSelfCoverage" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="AggregateSelfInsuranceRetentionPerOccurrence" id="thc_AggregateSelfInsuranceRetentionPerOccurrence" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="DisclosureOfCompensationRelatedCostsSharebasedPaymentsDefinedEmployeeRetirementPlanAbstract" id="thc_DisclosureOfCompensationRelatedCostsSharebasedPaymentsDefinedEmployeeRetirementPlanAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DisclosureOfCompensationRelatedCostsShareBasedPaymentsAndDefinedContributionPostRetirementPlanTextBlock" id="thc_DisclosureOfCompensationRelatedCostsShareBasedPaymentsAndDefinedContributionPostRetirementPlanTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfNetBenefitCostsAndAssumptionsUsedForNetPeriodicBenefitCostsTableTextBlock" id="thc_ScheduleOfNetBenefitCostsAndAssumptionsUsedForNetPeriodicBenefitCostsTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRights1" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRights1" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedPaymentsEmployeeLevelAxis" id="thc_ShareBasedPaymentsEmployeeLevelAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedPaymentsEmployeeLevelDomain" id="thc_ShareBasedPaymentsEmployeeLevelDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="TopLevelEmployeesMember" id="thc_TopLevelEmployeesMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPortionOfAwardSubjectToCertainConditions" id="thc_ShareBasedCompensationArrangementByShareBasedPaymentAwardPortionOfAwardSubjectToCertainConditions" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardMonetaryValueDomain" id="thc_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardMonetaryValueDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardMonetaryValueAxis" id="thc_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardAwardMonetaryValueAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardVestingTypeAxis" id="thc_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardVestingTypeAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardVestingTypeDomain" id="thc_ShareBasedCompensationArrangementsByShareBasedPaymentAwardVestingTypeDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EmployeeStockPurchasePlansAbstract" id="thc_EmployeeStockPurchasePlansAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ElectronicHealthRecordIncentives" id="thc_ElectronicHealthRecordIncentives" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="LitigationAndInvestigationCosts" id="thc_LitigationAndInvestigationCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxBenefitDueToReductionOfLiabilitiesForUncertainTaxPositions" id="thc_IncomeTaxBenefitDueToReductionOfLiabilitiesForUncertainTaxPositions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxBenefitDueToReductionOfLiabilitiesForUncertainTaxPositionsContinuingOperations" id="thc_IncomeTaxBenefitDueToReductionOfLiabilitiesForUncertainTaxPositionsContinuingOperations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="IncomeTaxBenefitDueToReductionOfLiabilitiesForUncertainTaxPositionsDiscontinuedOperations" id="thc_IncomeTaxBenefitDueToReductionOfLiabilitiesForUncertainTaxPositionsDiscontinuedOperations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpenseToContinuingOperations" id="thc_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpenseToContinuingOperations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpenseToDiscontinuedOperations" id="thc_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpenseToDiscontinuedOperations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="ConvertiblePreferredStockConversionObligationCommonStockClosingSalesPriceNumberOfTradingDays" id="thc_ConvertiblePreferredStockConversionObligationCommonStockClosingSalesPriceNumberOfTradingDays" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ConvertiblePreferredStockPrincipalAmountDenominatorForConversionIntoCommonStock" id="thc_ConvertiblePreferredStockPrincipalAmountDenominatorForConversionIntoCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="ElectronicHealthRecordIncentivesReceivableCurrent" id="thc_ElectronicHealthRecordIncentivesReceivableCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="SupplementalCaliforniaMedicalPaymentReceivableCurrent" id="thc_SupplementalCaliforniaMedicalPaymentReceivableCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="SupplementalMedicalPaymentReceivableCurrent" id="thc_SupplementalMedicalPaymentReceivableCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element name="NumberOfHospitalsWhichHaveReceivedInformationRequests" id="thc_NumberOfHospitalsWhichHaveReceivedInformationRequests" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="HospitalRelatedTortClaimMember" id="thc_HospitalRelatedTortClaimMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MultiplierOfAmountOfPunititiveAwardForCompensatoryAwards" id="thc_MultiplierOfAmountOfPunititiveAwardForCompensatoryAwards" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="MultiplierOfAmountOfPunititiveAwardForSubstantialCompensatoryAwards" id="thc_MultiplierOfAmountOfPunititiveAwardForSubstantialCompensatoryAwards" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ManagedCarePatientsMember" id="thc_ManagedCarePatientsMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AllowanceForDoubtfulAccountsAsPercentOfAccountsReceivable" id="thc_AllowanceForDoubtfulAccountsAsPercentOfAccountsReceivable" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DebtInstrument6.25PercentSeniorSecuredNotesDue2018Member" id="thc_DebtInstrument6.25PercentSeniorSecuredNotesDue2018Member" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AncillaryHealthCareBusinessesByTypeAxis" id="thc_AncillaryHealthCareBusinessesByTypeAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AncillaryHealthCareBusinessesByTypeDomain" id="thc_AncillaryHealthCareBusinessesByTypeDomain" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LossContingencyDamagesAwardedValueCompensatory" id="thc_LossContingencyDamagesAwardedValueCompensatory" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="LossContingencyDamagesAwardedValuePunitive" id="thc_LossContingencyDamagesAwardedValuePunitive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NumberOfLawsuitsInWhichEntityIsDefendant" id="thc_NumberOfLawsuitsInWhichEntityIsDefendant" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="NumberOfActiveAndDivestedInpatientHospitalsAndUnits" id="thc_NumberOfActiveAndDivestedInpatientHospitalsAndUnits" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CreightonUniversityMedicalCenterMember" id="thc_CreightonUniversityMedicalCenterMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="DisposalGroupIncludingDiscontinuedOperationWorkingCapital" id="thc_DisposalGroupIncludingDiscontinuedOperationWorkingCapital" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="DisposalGroupIncludingDiscontinuedOperationNoncashImpairmentChargesBeforeTax" id="thc_DisposalGroupIncludingDiscontinuedOperationNoncashImpairmentChargesBeforeTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="DisposalGroupIncludingDiscontinuedOperationNoncashImpairmentChargesAfterTax" id="thc_DisposalGroupIncludingDiscontinuedOperationNoncashImpairmentChargesAfterTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="SelfPayAccountsBalance" id="thc_SelfPayAccountsBalance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="SelfPayAccountsPeriodIncreaseDecrease" id="thc_SelfPayAccountsPeriodIncreaseDecrease" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="CapitalExpenditure" id="thc_CapitalExpenditure" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="AdjustedEarningsBeforeInterestTaxDepreciationAndAmortizationTotal" id="thc_AdjustedEarningsBeforeInterestTaxDepreciationAndAmortizationTotal" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="AdjustedEarningsBeforeIncomeTax" id="thc_AdjustedEarningsBeforeIncomeTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="AdjustedProformaEarningsBeforeInterestTaxDepreciationAndAmortization" id="thc_AdjustedProformaEarningsBeforeInterestTaxDepreciationAndAmortization" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfAdjustedProformaEarningsBeforeInterestTaxDepreciationAndAmortizationTableTextBlock" id="thc_ScheduleOfAdjustedProformaEarningsBeforeInterestTaxDepreciationAndAmortizationTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LossContingencyDamagesAwardedPreviouslyValuePunitive" id="thc_LossContingencyDamagesAwardedPreviouslyValuePunitive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="NumberOfStatesInWhichFreeStandingAndProviderBasedDiagnosticImagingCentersAndAmbulatorySurgeryCentersOperatedBySubsidiariesForContinuingOperations" id="thc_NumberOfStatesInWhichFreeStandingAndProviderBasedDiagnosticImagingCentersAndAmbulatorySurgeryCentersOperatedBySubsidiariesForContinuingOperations" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" />
</xsd:schema>