Medicare Advantage in Bristol County, Massachusetts
53,342 people in Bristol County, Massachusetts were enrolled in Medicare Advantage in October 2026, 39.2% of 136,125 eligible beneficiaries (−0.4 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 24% of reported enrollment; 15 parent organizations have 11 or more members and the HHI is 1,466 (moderately concentrated). For 2027, 4,404 members here are in plans that terminate or leave the county, and NEIGHBORHOOD HEALTH PLAN OF RHODE ISLAND leaves. MA plans offered go from 38 to 39.
Parent organizations in Bristol County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 12,928 | −1,630 | 24.3% |
| CVS Health Corporation | 9,896 | −89 | 18.6% |
| Point32Health, Inc. | 7,433 | −1,860 | 14.0% |
| Blue Cross and Blue Shield of Massachusetts, Inc. | 6,689 | −943 | 12.6% |
| Eternal Health of Delaware, Inc. | 4,725 | +3,819 | 8.9% |
| Humana Inc. | 2,912 | +791 | 5.5% |
| CareSource | 2,899 | +63 | 5.5% |
| Molina Healthcare, Inc. | 2,202 | −193 | 4.1% |
| Fallon Community Health Plan, Inc. | 1,692 | +44 | 3.2% |
| Mass General Brigham Incorporated | 1,070 | +660 | 2.0% |
| Blue Cross & Blue Shield of Rhode Island | 279 | −12 | 0.5% |
| Highmark Health | 145 | −1 | 0.3% |
| Elevance Health, Inc. | 110 | −1 | 0.2% |
| NEIGHBORHOOD HEALTH PLAN OF RHODE ISLAND | 68 | +35 | 0.1% |
| Harbor Health Services, Inc. | 45 | +4 | under 0.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 41,012 beneficiaries in Bristol County were assigned to 101 Medicare Shared Savings Program ACOs, 64.3% 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.