Medicare Advantage in Hampshire County, Massachusetts
11,935 people in Hampshire County, Massachusetts were enrolled in Medicare Advantage in October 2026, 29.7% of 40,221 eligible beneficiaries (−1.0 pts since October 2025). Blue Cross and Blue Shield of Massachusetts, Inc. is the largest parent organization with 36% of reported enrollment; 11 parent organizations have 11 or more members and the HHI is 2,234 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 409 members here are in plans that terminate or leave the county, and CVS Health Corporation leaves. MA plans offered go from 27 to 28.
Parent organizations in Hampshire County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Blue Cross and Blue Shield of Massachusetts, Inc. | 4,292 | −112 | 36.3% |
| Baystate Health, Inc. | 2,516 | +484 | 21.3% |
| UnitedHealth Group, Inc. | 1,863 | +205 | 15.8% |
| Point32Health, Inc. | 1,178 | −101 | 10.0% |
| CareSource | 1,178 | 0 | 10.0% |
| CVS Health Corporation | 427 | −683 | 3.6% |
| Fallon Community Health Plan, Inc. | 193 | +2 | 1.6% |
| Humana Inc. | 59 | +10 | 0.5% |
| Elevance Health, Inc. | 56 | +1 | 0.5% |
| Serenity Care, Inc. | 33 | −3 | 0.3% |
| Trinity Health Corporation | 28 | −2 | 0.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 14,190 beneficiaries in Hampshire County were assigned to 105 Medicare Shared Savings Program ACOs, 69.3% of assignable Original Medicare beneficiaries. Together, roughly 78% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.