Medicare Advantage in Berkshire County, Massachusetts
6,454 people in Berkshire County, Massachusetts were enrolled in Medicare Advantage in October 2026, 16.8% of 38,518 eligible beneficiaries (+0.4 pts since October 2025). Baystate Health, Inc. is the largest parent organization with 49% of reported enrollment; 9 parent organizations have 11 or more members and the HHI is 3,415 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 4,101 members here are in plans that terminate or leave the county. MA plans offered go from 10 to 7.
Parent organizations in Berkshire County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Baystate Health, Inc. | 3,122 | +197 | 49.2% |
| Fallon Community Health Plan, Inc. | 1,856 | +159 | 29.2% |
| CareSource | 622 | −70 | 9.8% |
| UnitedHealth Group, Inc. | 335 | −59 | 5.3% |
| CVS Health Corporation | 269 | +34 | 4.2% |
| Elevance Health, Inc. | 59 | −6 | 0.9% |
| Humana Inc. | 50 | +16 | 0.8% |
| Health Care Service Corporation | 19 | new | 0.3% |
| Blue Cross and Blue Shield of Massachusetts, Inc. | 18 | −1 | 0.3% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 17,468 beneficiaries in Berkshire County were assigned to 99 Medicare Shared Savings Program ACOs, 68.1% of assignable Original Medicare beneficiaries. Together, roughly 73% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.