MA Enrollment Explorer / Parent organizations / Cambridge Health Alliance
Cambridge Health Alliance: Medicare Advantage enrollment and market share
Cambridge Health Alliance had 686 Medicare Advantage members in October 2026, #185 nationally with 0.00% of all MA enrollment. It gained 4 members (+0.6%) since October 2025, and has enrollment in 1 state and 2 counties with 11 or more members. In the 2026 Annual Election Period (December to February) it lost 0 members (0.0%). For 2027, none of its members are in plans that terminate or leave their county.
686MA members, October 2026
+0.6%change since October 2025 (+4)
0.00%national MA share, rank 185
1contracts with enrollment
Largest states
| State | Members | Share of state MA |
|---|---|---|
| Massachusetts | 668 | 0.1% |
Largest counties
| County | Members | Change since October 2025 | Share of county MA |
|---|---|---|---|
| Middlesex County, MA | 604 | +4 | 0.6% |
| Suffolk County, MA | 64 | −2 | 0.1% |
Contracts
| Contract | Plan type | Oct 2024 | Oct 2025 | Oct 2026 |
|---|---|---|---|---|
| H2221 CHA PACE | National PACE | 639 | 682 | 686 |
Star ratings for these contracts are in the MA Quality Dashboard.