Massachusetts Medicaid Program Overview
Enrollment, funding, and managed care facts for Massachusetts Medicaid.
Get Massachusetts's Medicaid Fee Schedule →Enrollment
Massachusetts Medicaid covered approximately 1.54-1.60M people. KFF's state indicator gives 1,535,921 (May 2026); healthinsurance.org (citing state data) gives 1,595,952 (October 2025). Close but not identical -- different snapshot months during the ongoing post-unwinding enrollment decline, not a contradiction. Reported as a range rather than a single false-precision number.
Funding & federal match
Massachusetts has adopted ACA Medicaid expansion.
For FFY2026 (Oct 1, 2025 - Sep 30, 2026), Massachusetts's Federal Medical Assistance Percentage (FMAP) is 50%.
Waivers
Massachusetts operates Medicaid managed care under the MassHealth Section 1115 Demonstration, a Section 1115 demonstration waiver. Provides federal authority for MassHealth (Massachusetts's Medicaid/CHIP program) to expand eligibility beyond standard Medicaid/CHIP limits (including the MassHealth CarePlus expansion population), offer services not typically covered by Medicaid, and use ACO-based managed care delivery. Extended by CMS on September 28, 2022 through December 31, 2027 (a $67 billion demonstration).
Has Massachusetts expanded Medicaid under the ACA?
Yes. Massachusetts has adopted ACA Medicaid expansion.
How many people are enrolled in Massachusetts Medicaid?
Approximately 1.54-1.60M people.
What percentage of the federal Medicaid match does Massachusetts receive?
50% for FFY2026 (Oct 1, 2025 - Sep 30, 2026) — meaning the federal government pays roughly 50 cents of every Massachusetts Medicaid dollar, and the state pays the rest.
What Medicaid waivers does Massachusetts operate under?
MassHealth Section 1115 Demonstration, a Section 1115 demonstration waiver. Provides federal authority for MassHealth (Massachusetts's Medicaid/CHIP program) to expand eligibility beyond standard Medicaid/CHIP limits (including the MassHealth CarePlus expansion population), offer services not typically covered by Medicaid, and use ACO-based managed care delivery. Extended by CMS on September 28, 2022 through December 31, 2027 (a $67 billion demonstration).
Get Massachusetts's Free Medicaid Fee Schedule
Request actual Massachusetts Medicaid reimbursement rates by billing code — free, delivered as a CSV.
Sources
- KFF State Health Facts - Total Monthly Medicaid & CHIP Enrollment
- healthinsurance.org - Medicaid eligibility and enrollment in Massachusetts
- KFF State Health Facts - Federal Medical Assistance Percentage (FMAP) for Medicaid and Multiplier
- Congressional Research Service - Medicaid's Federal Medical Assistance Percentage (FMAP), R43847 (updated April 2, 2025, citing Federal Register FY2026 notice)
- KFF - Status of State Medicaid Expansion Decisions
- Mass.gov - MassHealth Section 1115 Demonstration Waiver
- Medicaid.gov - MassHealth Section 1115 Demonstration Amendment Approval
Data last verified 2026-09-17. Also see our free Medicaid Fee Schedule tool.