Medicare Advantage in Cumberland County, Maine
47,418 people in Cumberland County, Maine were enrolled in Medicare Advantage in October 2026, 60.8% of 77,951 eligible beneficiaries (−0.7 pts since October 2025). Martin's Point Health Care, Inc. is the largest parent organization with 39% of reported enrollment; 11 parent organizations have 11 or more members and the HHI is 2,555 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 17,690 members here are in plans that terminate or leave the county. MA plans offered go from 26 to 22.
Parent organizations in Cumberland County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Martin's Point Health Care, Inc. | 18,371 | −1,038 | 38.8% |
| CVS Health Corporation | 11,691 | +1,377 | 24.7% |
| UnitedHealth Group, Inc. | 8,097 | −480 | 17.1% |
| Elevance Health, Inc. | 4,248 | −578 | 9.0% |
| Humana Inc. | 3,631 | +1,304 | 7.7% |
| Centene Corporation | 1,140 | +28 | 2.4% |
| Health Care Service Corporation | 76 | +27 | 0.2% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 29 | −35 | under 0.1% |
| California Physicians' Service | 16 | +3 | under 0.1% |
| Highmark Health | 14 | +1 | under 0.1% |
| Blue Cross and Blue Shield of Massachusetts, Inc. | 12 | +1 | 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, 11,716 beneficiaries in Cumberland County were assigned to 130 Medicare Shared Savings Program ACOs, 59.0% of assignable Original Medicare beneficiaries. Together, roughly 84% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.