MA payer · 4 active contracts
Mass General Brigham Health Plan, Inc.
20,242
Total MA enrolled
10
Counties served
1
States served
MA
Largest state
Top states by enrollment
- 1MA20,242
Top counties
by single-county enrollment- 4,292Middlesex, MALocal PPO · contract H9485
- 4,251Essex, MALocal PPO · contract H9485
- 2,628Norfolk, MALocal PPO · contract H9485
- 2,427Suffolk, MALocal PPO · contract H9485
- 2,339Plymouth, MALocal PPO · contract H9485
- 894Bristol, MALocal PPO · contract H9485
- 490Middlesex, MAHMO/HMOPOS · contract H6847
- 464Essex, MAHMO/HMOPOS · contract H6847
- 388Worcester, MALocal PPO · contract H9485
- 339Norfolk, MAHMO/HMOPOS · contract H6847
- 291Plymouth, MAHMO/HMOPOS · contract H6847
- 269Suffolk, MAHMO/HMOPOS · contract H6847
- 197Dukes, MALocal PPO · contract H9485
- 185Suffolk, MAHMO/HMOPOS · contract H0777
- 104Suffolk, MAHMO/HMOPOS · contract H1611
Plan-type mix (enrollment)
Local PPO
17,503 enrolled
HMO/HMOPOS
2,739 enrolled
Source: CMS Monthly MA Enrollment by State/County/Contract (May 2026, abridged). Enrollment counts ≤ 10 are excluded from the source file (HIPAA suppression).