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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2014-08-26</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000885978</issuerCik>
        <issuerName>U S PHYSICAL THERAPY INC /NV</issuerName>
        <issuerTradingSymbol>USPH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001182168</rptOwnerCik>
            <rptOwnerName>KUNTZ EDWARD L</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>8807 STABLE CREST BLVD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 300</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77042</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>3000</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These 3,000 restricted shares of the Company's stock were granted pursuant to the Company's Amended and Restated 2003 Employee Stock Option Plan with quarterly vesting schedule as to the lapse of restrictions thereof in equal portions (750 shares) with the first vesting on October 1, 2014 and thereafter equal portions on January 1, 2015, April 1, 2015, and July 1, 2015. The shares were granted for no consideration other than Mr. Kuntz's services to the Company as a member of its Board of Directors.  The stock was valued at the close of market on August 26, 2014 at $35.99 per share.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Edward Kuntz</signatureName>
        <signatureDate>2014-08-26</signatureDate>
    </ownerSignature>
</ownershipDocument>
