Medicare Advantage in Sagadahoc County, Maine
6,778 people in Sagadahoc County, Maine were enrolled in Medicare Advantage in October 2026, 59.0% of 11,490 eligible beneficiaries (−0.2 pts since October 2025). Martin's Point Health Care, Inc. is the largest parent organization with 36% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 2,451 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 813 members here are in plans that terminate or leave the county. MA plans offered go from 25 to 18.
Parent organizations in Sagadahoc County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Martin's Point Health Care, Inc. | 2,419 | −187 | 36.0% |
| CVS Health Corporation | 1,838 | +226 | 27.3% |
| UnitedHealth Group, Inc. | 1,002 | −66 | 14.9% |
| Humana Inc. | 708 | +273 | 10.5% |
| Elevance Health, Inc. | 548 | −102 | 8.2% |
| Centene Corporation | 208 | +2 | 3.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,978 beneficiaries in Sagadahoc County were assigned to 40 Medicare Shared Savings Program ACOs, 66.0% of assignable Original Medicare beneficiaries. Together, roughly 86% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.