MA payer · 3 active contracts

TUFTS ASSOCIATED HEALTH MAINTENANCE ORGANIZATION

118,308

Total MA enrolled

Counties served

States served

Largest state

Top states by enrollment

1MA118,308

Top counties

by single-county enrollment

Middlesex, MA
HMO/HMOPOS · contract H2256
35,117
Essex, MA
HMO/HMOPOS · contract H2256
13,308
Worcester, MA
HMO/HMOPOS · contract H2256
11,697
Norfolk, MA
HMO/HMOPOS · contract H2256
11,405
Plymouth, MA
HMO/HMOPOS · contract H2256
7,569
Barnstable, MA
HMO/HMOPOS · contract H2256
6,512
Suffolk, MA
HMO/HMOPOS · contract H2256
5,982
Bristol, MA
HMO/HMOPOS · contract H2256
5,136
Suffolk, MA
HMO/HMOPOS · contract H8330
4,332
Middlesex, MA
HMO/HMOPOS · contract H8330
4,078
Hampden, MA
HMO/HMOPOS · contract H2256
2,942
Norfolk, MA
HMO/HMOPOS · contract H8330
2,218
Plymouth, MA
HMO/HMOPOS · contract H8330
1,269
Hampshire, MA
HMO/HMOPOS · contract H2256
1,125
Bristol, MA
HMO/HMOPOS · contract H8330
1,018

Plan-type mix (enrollment)

HMO/HMOPOS

116,315 enrolled

Local PPO

1,993 enrolled

Source: CMS Monthly MA Enrollment by State/County/Contract (May 2026, abridged). Enrollment counts ≤ 10 are excluded from the source file (HIPAA suppression).