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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2020-01-30</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001404123</issuerCik>
        <issuerName>1Life Healthcare Inc</issuerName>
        <issuerTradingSymbol>ONEM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001363391</rptOwnerCik>
            <rptOwnerName>J.P. Morgan Investment Management Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O J.P. MORGAN ASSET MANAGEMENT</rptOwnerStreet1>
            <rptOwnerStreet2>320 PARK AVENUE, 15TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Series H Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>5383180</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Series H Preferred Stock</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>343607</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The preferred stock is convertible into shares of the Issuer's common stock, par value $0.001 per share (&quot;Common Stock&quot;) on a one-for-one basis and has no expiration date. Upon the closing of the Issuer's initial public offering, the shares will automatically convert into shares of Common Stock on a one-for-one basis.</footnote>
        <footnote id="F2">Represents shares held by PEG Digital Growth Fund II L.P. (&quot;DGF II&quot;). J.P. Morgan Investment Management Inc. (&quot;JPMIM&quot;) serves as investment adviser to DGF II. JPMIM disclaims beneficial ownership of the shares held by DGF II and disclaims pecuniary interest in such shares except to the extent of its economic interest.</footnote>
        <footnote id="F3">Represents shares held by AARP Innovation Fund L.P. (&quot;AARP Fund&quot;). JPMIM serves as investment adviser to AARP Fund. JPMIM disclaims beneficial ownership of the shares held by AARP Fund and disclaims pecuniary interest in such shares except to the extent of its economic interest.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Tyler Jayroe, J.P. Morgan Investment Management Inc., By: Tyler Jayroe, Executive Director</signatureName>
        <signatureDate>2020-01-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
