Medicare Advantage in Kennebec County, Maine
22,740 people in Kennebec County, Maine were enrolled in Medicare Advantage in October 2026, 64.3% of 35,385 eligible beneficiaries (+0.2 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 25% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 1,914 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 957 members here are in plans that terminate or leave the county. MA plans offered go from 26 to 23.
Parent organizations in Kennebec County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 5,668 | −331 | 25.0% |
| Martin's Point Health Care, Inc. | 5,527 | −204 | 24.3% |
| CVS Health Corporation | 4,040 | −561 | 17.8% |
| Humana Inc. | 3,489 | +1,819 | 15.4% |
| Elevance Health, Inc. | 2,245 | −474 | 9.9% |
| Centene Corporation | 1,562 | +196 | 6.9% |
| Health Care Service Corporation | 162 | −3 | 0.7% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 12 | 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, 832 beneficiaries in Kennebec County were assigned to 71 Medicare Shared Savings Program ACOs, 11.0% of assignable Original Medicare beneficiaries. Together, roughly 68% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.