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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001209191-10-001154.txt : 20100105
<SEC-HEADER>0001209191-10-001154.hdr.sgml : 20100105
<ACCEPTANCE-DATETIME>20100105165721
ACCESSION NUMBER:		0001209191-10-001154
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20091231
FILED AS OF DATE:		20100105
DATE AS OF CHANGE:		20100105

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PETTINGILL RICHARD
		CENTRAL INDEX KEY:			0001282997

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-07293
		FILM NUMBER:		10507783

	MAIL ADDRESS:	
		STREET 1:		3820 STATE STREET
		CITY:			SANTA BARBARA
		STATE:			CA
		ZIP:			93105

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TENET HEALTHCARE CORP
		CENTRAL INDEX KEY:			0000070318
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-GENERAL MEDICAL & SURGICAL HOSPITALS, NEC [8062]
		IRS NUMBER:				952557091
		STATE OF INCORPORATION:			NV
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1445 ROSS AVENUE
		STREET 2:		SUITE 1400
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75202
		BUSINESS PHONE:		469-893-2701

	MAIL ADDRESS:	
		STREET 1:		1445 ROSS AVENUE
		STREET 2:		SUITE 1400
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75202

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NATIONAL MEDICAL ENTERPRISES INC /NV/
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
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<?xml version="1.0"?>
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    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-12-31</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000070318</issuerCik>
        <issuerName>TENET HEALTHCARE CORP</issuerName>
        <issuerTradingSymbol>THC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001282997</rptOwnerCik>
            <rptOwnerName>PETTINGILL RICHARD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1445 ROSS AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1400</rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75202</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>50869</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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            <transactionDate>
                <value>2009-12-31</value>
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            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2481</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.39</value>
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        <derivativeHolding>
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            <conversionOrExercisePrice>
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                <value>2004-03-25</value>
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            <expirationDate>
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        <derivativeHolding>
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        <derivativeHolding>
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            <underlyingSecurity>
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                <underlyingSecurityShares>
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                <sharesOwnedFollowingTransaction>
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            <ownershipNature>
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                    <value>D</value>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>2006 May Director Stock Units</value>
                <footnoteId id="F3"/>
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            <conversionOrExercisePrice>
                <value>0.00</value>
                <footnoteId id="F4"/>
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            <underlyingSecurity>
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                <underlyingSecurityShares>
                    <value>17264</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>17264</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
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                    <value>D</value>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>2007 May Director Stock Units</value>
                <footnoteId id="F3"/>
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            <conversionOrExercisePrice>
                <value>0.00</value>
                <footnoteId id="F5"/>
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            <underlyingSecurity>
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        <derivativeHolding>
            <securityTitle>
                <value>2008 May Director Stock Units</value>
                <footnoteId id="F3"/>
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            <conversionOrExercisePrice>
                <value>0.00</value>
                <footnoteId id="F6"/>
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                <footnoteId id="F6"/>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
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                <underlyingSecurityShares>
                    <value>22807</value>
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                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>2009 May Director Stock Units</value>
                <footnoteId id="F3"/>
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            <conversionOrExercisePrice>
                <value>0.00</value>
                <footnoteId id="F6"/>
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                <footnoteId id="F6"/>
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            <expirationDate>
                <footnoteId id="F6"/>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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                <underlyingSecurityShares>
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                </underlyingSecurityShares>
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            <postTransactionAmounts>
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                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
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                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeHolding>
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    <footnotes>
        <footnote id="F1">These Stock Units were accrued under the Company's Deferred Compensation Plans.</footnote>
        <footnote id="F2">These Stock Units are settled in shares of the Company's common stock in accordance with the Company's Deferred Compensation Plans. The conversion rate is one share of common stock for each Stock Unit.</footnote>
        <footnote id="F3">These Stock Units were awarded under the Company's Stock Incentive Plan.</footnote>
        <footnote id="F4">These Stock Units vested ratably on each of the first, second and third anniversaries of the date of grant and will be settled in shares of the Company's common stock only upon termination of service.</footnote>
        <footnote id="F5">These Stock Units vest ratably on each of the first, second and third anniversaries of the date of grant or become fully vested upon termination of service, whichever occurs first, and will be settled in shares of the Company's common stock on the date they become fully vested, unless settlement has been deferred in accordance with the Company's Stock Incentive Plan.</footnote>
        <footnote id="F6">These Stock Units vested immediately on the grant date and will be settled in shares of the Company's common stock on the third anniversary of the date of the grant or termination of service, unless settlement has been deferred or under other circumstances described in the reporting person's award agreement.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Kristina A. Mack, Attorney-in-fact for Richard R. Pettingill</signatureName>
        <signatureDate>2010-01-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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