All these programs are combined in Massachusetts under one 'application' (if you're under age 65) https://mahealthconnector.org
In order to determine eligibility (You must renew every year! Like doing taxes!) <ref>https://www.mass.gov/doc/130-cmr-502-health-care-reform-masshealth-eligibility-process/download Also, "CaseText" - a division of Thomson Reuters, has the [https://casetext.com/regulation/code-of-massachusetts-regulations/department-130-cmr-division-of-medical-assistance/title-130-cmr-502000-health-care-reform-masshealth-eligibility-process/section-502007-continuing-eligibility 130 Mass. Reg. 502.007] (and all Massachusetts Legal Code) in a more readable format.</ref>, MassHealth initiates 'information matches'. They look you up electronically to match you in (emphasis added)
#'''the Federal Data Hub''', which matches with the '''Social Security Administration''', the '''Department of Homeland Security''', and the '''Internal Revenue Service'''; and