<SEC-DOCUMENT>0001562180-21-005796.txt : 20210903
<SEC-HEADER>0001562180-21-005796.hdr.sgml : 20210903
<ACCEPTANCE-DATETIME>20210903160612
ACCESSION NUMBER:		0001562180-21-005796
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210901
FILED AS OF DATE:		20210903
DATE AS OF CHANGE:		20210903

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Burton Daniel D.
		CENTRAL INDEX KEY:			0001780980

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38993
		FILM NUMBER:		211236506

	MAIL ADDRESS:	
		STREET 1:		C/O HEALTH CATALYST, INC.
		STREET 2:		3165 E. MILLROCK DRIVE #400
		CITY:			SALT LAKE CITY
		STATE:			UT
		ZIP:			84121

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Health Catalyst, Inc.
		CENTRAL INDEX KEY:			0001636422
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC. [7370]
		IRS NUMBER:				453337483
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		10897 SOUTH RIVER FRONT PARKWAY, #300
		CITY:			SOUTH JORDAN
		STATE:			UT
		ZIP:			84095
		BUSINESS PHONE:		801-708-6800

	MAIL ADDRESS:	
		STREET 1:		10897 SOUTH RIVER FRONT PARKWAY, #300
		CITY:			SOUTH JORDAN
		STATE:			UT
		ZIP:			84095

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HQC Holdings, Inc.
		DATE OF NAME CHANGE:	20150312
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primarydocument.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-09-01</periodOfReport>

    <notSubjectToSection16>false</notSubjectToSection16>

    <issuer>
        <issuerCik>0001636422</issuerCik>
        <issuerName>Health Catalyst, Inc.</issuerName>
        <issuerTradingSymbol>HCAT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001780980</rptOwnerCik>
            <rptOwnerName>Burton Daniel D.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O HEALTH CATALYST, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>10897 SOUTH RIVER FRONT PARKWAY, #300</rptOwnerStreet2>
            <rptOwnerCity>SOUTH JORDAN</rptOwnerCity>
            <rptOwnerState>UT</rptOwnerState>
            <rptOwnerZipCode>84095</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-09-01</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4304.00</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>54.2321</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>251352.00</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Issuer's Restricted Stock Units. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a &quot;sell to cover&quot; transaction and does not represent a discretionary trade by the Reporting Person.</footnote>
        <footnote id="F2">Represents a weighted average price. These shares were sold by the Reporting Person in multiple transactions at prices ranging from $53.91 to $54.76, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this Footnote.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Daniel Orenstein,  as Attorney-in-Fact</signatureName>
        <signatureDate>2021-09-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
