Medicare Advantage in Essex County, Massachusetts
65,004 people in Essex County, Massachusetts were enrolled in Medicare Advantage in October 2026, 35.4% of 183,751 eligible beneficiaries (−0.5 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 30% of reported enrollment; 13 parent organizations have 11 or more members and the HHI is 1,853 (highly concentrated). For 2027, 14,325 members here are in plans that terminate or leave the county. MA plans offered go from 39 to 35.
Parent organizations in Essex County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 19,328 | −2,132 | 29.9% |
| Point32Health, Inc. | 15,031 | −737 | 23.3% |
| CVS Health Corporation | 8,488 | +1,953 | 13.1% |
| Blue Cross and Blue Shield of Massachusetts, Inc. | 6,464 | −2,977 | 10.0% |
| CareSource | 5,259 | −163 | 8.1% |
| Mass General Brigham Incorporated | 5,160 | +3,557 | 8.0% |
| Humana Inc. | 1,738 | +1,104 | 2.7% |
| Molina Healthcare, Inc. | 1,072 | +119 | 1.7% |
| Fallon Community Health Plan, Inc. | 1,042 | +100 | 1.6% |
| Element Care, Inc. | 809 | −17 | 1.3% |
| Elevance Health, Inc. | 175 | +12 | 0.3% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 25 | −20 | under 0.1% |
| Health Care Service Corporation | 15 | new | 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, 67,170 beneficiaries in Essex County were assigned to 155 Medicare Shared Savings Program ACOs, 77.5% of assignable Original Medicare beneficiaries. Together, roughly 85% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.