<SEC-DOCUMENT>0001179929-18-000061.txt : 20180309
<SEC-HEADER>0001179929-18-000061.hdr.sgml : 20180309
<ACCEPTANCE-DATETIME>20180309201904
ACCESSION NUMBER:		0001179929-18-000061
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180307
FILED AS OF DATE:		20180309
DATE AS OF CHANGE:		20180309

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Barlow Jeff D.
		CENTRAL INDEX KEY:			0001555603

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31719
		FILM NUMBER:		18681677

	MAIL ADDRESS:	
		STREET 1:		300 UNIVERSITY AVENUE, SUITE 100
		CITY:			SACRAMENTO
		STATE:			CA
		ZIP:			95825

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MOLINA HEALTHCARE INC
		CENTRAL INDEX KEY:			0001179929
		STANDARD INDUSTRIAL CLASSIFICATION:	HOSPITAL & MEDICAL SERVICE PLANS [6324]
		IRS NUMBER:				134204626
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		200 OCEANGATE, SUITE 100
		CITY:			LONG BEACH
		STATE:			CA
		ZIP:			90802
		BUSINESS PHONE:		5624353666

	MAIL ADDRESS:	
		STREET 1:		200 OCEANGATE, SUITE 100
		CITY:			LONG BEACH
		STATE:			CA
		ZIP:			90802
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_152064473035802.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-03-07</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001179929</issuerCik>
        <issuerName>MOLINA HEALTHCARE INC</issuerName>
        <issuerTradingSymbol>MOH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001555603</rptOwnerCik>
            <rptOwnerName>Barlow Jeff D.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>300 UNIVERSITY AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 100</rptOwnerStreet2>
            <rptOwnerCity>SACRAMENTO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95825</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Legal Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-03-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1084</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>74.75</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>58892</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-03-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F3"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2030</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>74.75</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>56862</value>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The shares were applied to payment of withholding taxes in connection with the vesting of 3,132 shares on March 7, 2018.</footnote>
        <footnote id="F2">Represents the closing price of the Issuer's common stock on March 7, 2018.</footnote>
        <footnote id="F3">The shares were applied to payment of withholding taxes arising in connection with the vesting of 4,698 shares on March 7, 2018, upon the Company's achievement of a business expansion metric.</footnote>
        <footnote id="F4">The shares vest as follows: (i) 22,259 shares shall vest in one-third increments on each of March 1, 2019, March 1, 2020, and March 1, 2021; (ii) an additional 3,158 shares shall vest on each of March 1, 2019 and March 1, 2020; (iii) 3,132 shares shall vest based on the Company's 2018 after tax profit margin; (iv) 3,132 shares shall vest on March 7, 2019; (v) 1,885 shares shall vest on April 1, 2018; the remainder of the shares are vested.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Jeff D. Barlow</signatureName>
        <signatureDate>2018-03-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
