<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-03-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000773660</issuerCik>
        <issuerName>HealthMarkets, Inc.</issuerName>
        <issuerTradingSymbol>N/A</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001217152</rptOwnerCik>
            <rptOwnerName>BOXER MICHAEL</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>9151 BOULEVARD 26</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NORTH RICHLAND HILLS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>76180</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP and CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>27.86</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2008-03-13</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4395</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>27.86</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2007-09-26</value>
            </exerciseDate>
            <expirationDate>
                <value>2016-09-26</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A-1 Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>4395</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>97201</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>27.86</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2008-03-13</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>760</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>27.86</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2007-09-29</value>
            </exerciseDate>
            <expirationDate>
                <value>2016-09-29</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A-1 Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>760</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>97961</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On September 26, 2006, the Compensation Committee of the Issuer approved a grant to the reporting person of an option to purchase 35,167 shares of Class A-1 Common Stock, which would vest based on the Issuer's satisfaction of certain performance criteria, as follows:  (i) 25% on the first anniversary of the grant date, (ii) 25% on the second anniversary of the grant date, (iii) 17% on the third anniversary of the grant date, (iv) 17% on the fourth anniversary of the grant date, and (v) the remaining 16% on the fifth anniversary of the grant date.  On March 13, 2008, the Issuer determined that the performance criteria for the second 25% had been met to the extent of 50%, or 12.5%, which will result in vesting of the option as to 4,395 shares on September 26, 2008, subject to the reporting person's continued employment as of such date.</footnote>
        <footnote id="F2">On September 29, 2006, the Compensation Committee of the Issuer approved a grant to the reporting person of an option to purchase 6,081 shares of Class A-1 Common Stock, which would vest based on the Issuer's satisfaction of certain performance criteria, as follows:  (i) 25% on the first anniversary of the grant date, (ii) 25% on the second anniversary of the grant date, (iii) 17% on the third anniversary of the grant date, (iv) 17% on the fourth anniversary of the grant date, and (v) the remaining 16% on the fifth anniversary of the grant date.  On March 13, 2008, the Issuer determined that the performance criteria for the second 25% had been met to the extent of 50%, or 12.5%, which will result in vesting of the option as to 760 shares on September 29, 2008, subject to the reporting person's continued employment as of such date.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Michael Boxer
By /s/ Peggy G. Simpson, POA</signatureName>
        <signatureDate>2008-03-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
