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

    <schemaVersion>X0704</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001459390</cik>
        <entityName>Constitution Medical Investors, Inc.</entityName>
        <issuerAddress>
            <street1>Boston Independence Wharf</street1>
            <street2>470 Atlantic Avenue, 4th Floor</street2>
            <city>Boston</city>
            <stateOrCountry>MA</stateOrCountry>
            <stateOrCountryDescription>MASSACHUSETTS</stateOrCountryDescription>
            <zipCode>02210</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>781-328-3322</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2008</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Elizabeth</firstName>
                <lastName>Weatherman</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Warburg Pincus &amp; Co.</street1>
                <street2>466 Lexington Ave., 11th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10017</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Sean</firstName>
                <lastName>Carney</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Warburg Pincus &amp; Co.</street1>
                <street2>466 Lexington Ave., 11th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10017</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Noah</firstName>
                <lastName>Knauf</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Warburg Pincus &amp; Co.</street1>
                <street2>466 Lexington Ave., 11th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10017</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Patrick</firstName>
                <middleName>J.</middleName>
                <lastName>Sullivan</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>151 Plympton Road</street1>
                <city>Sudbury</city>
                <stateOrCountry>MA</stateOrCountry>
                <stateOrCountryDescription>MASSACHUSETTS</stateOrCountryDescription>
                <zipCode>01776</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Executive Chairman of the Board and Secretary of the Issuer</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Daniel</firstName>
                <middleName>J.</middleName>
                <lastName>Levangie</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>120 Commonwealth Ave.</street1>
                <city>Boston</city>
                <stateOrCountry>MA</stateOrCountry>
                <stateOrCountryDescription>MASSACHUSETTS</stateOrCountryDescription>
                <zipCode>02116</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>President and Chief Executive Officer of the Issuer</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Eileen</firstName>
                <lastName>Maus</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>5 Red Oak Row</street1>
                <city>Westwood</city>
                <stateOrCountry>MD</stateOrCountry>
                <stateOrCountryDescription>MARYLAND</stateOrCountryDescription>
                <zipCode>02649</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Senior Vice President and Chief Commercial Officer of the Issuer</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>James</firstName>
                <middleName>R.</middleName>
                <lastName>Linder</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>527 North Elmwood Road</street1>
                <city>Omaha</city>
                <stateOrCountry>NE</stateOrCountry>
                <stateOrCountryDescription>NEBRASKA</stateOrCountryDescription>
                <zipCode>68132</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Senior Vice President and Chief Medical Officer of the Issuer</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Phyllis</firstName>
                <lastName>Cousineau</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Constitution Medical Investors, Inc.</street1>
                <street2>144 Middlesex Turnpike</street2>
                <city>Burlington</city>
                <stateOrCountry>MA</stateOrCountry>
                <stateOrCountryDescription>MASSACHUSETTS</stateOrCountryDescription>
                <zipCode>01813</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Corporate Counsel</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Biotechnology</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2010-04-02</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>100000</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>16000000</totalOfferingAmount>
            <totalAmountSold>16000000</totalAmountSold>
            <totalRemaining>0</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>7</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>1000000</dollarAmount>
                <isEstimate>true</isEstimate>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>Constitution Medical Investors, Inc.</issuerName>
                <signatureName>Phyllis Cousineau</signatureName>
                <nameOfSigner>Phyllis Cousineau</nameOfSigner>
                <signatureTitle>Corporate Counsel</signatureTitle>
                <signatureDate>2010-04-12</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
