Medicare Advantage in Clinton County, Michigan
12,510 people in Clinton County, Michigan were enrolled in Medicare Advantage in October 2026, 71.1% of 17,601 eligible beneficiaries (−0.9 pts since October 2025). Blue Cross Blue Shield of Michigan Mutual Ins. Co. is the largest parent organization with 59% of reported enrollment; 9 parent organizations have 11 or more members and the HHI is 4,074 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 84 members here are in plans that terminate or leave the county. MA plans offered go from 50 to 47.
Parent organizations in Clinton County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 7,339 | −540 | 58.9% |
| Humana Inc. | 2,797 | +437 | 22.4% |
| Corewell Health | 1,062 | +478 | 8.5% |
| CVS Health Corporation | 541 | +160 | 4.3% |
| Henry Ford Health System | 467 | +379 | 3.7% |
| McLaren Health Care Corporation | 126 | +32 | 1.0% |
| UnitedHealth Group, Inc. | 87 | +7 | 0.7% |
| Trinity Health Corporation | 28 | new | 0.2% |
| Volunteers of America National Services | 23 | −3 | 0.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 2,027 beneficiaries in Clinton County were assigned to 40 Medicare Shared Savings Program ACOs, 53.3% 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.