Medicare Advantage in Otsego County, Michigan
4,122 people in Otsego County, Michigan were enrolled in Medicare Advantage in October 2026, 55.4% of 7,443 eligible beneficiaries (+0.5 pts since October 2025). Blue Cross Blue Shield of Michigan Mutual Ins. Co. is the largest parent organization with 37% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 2,474 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 1,118 members here are in plans that terminate or leave the county. MA plans offered go from 49 to 40.
Parent organizations in Otsego County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 1,524 | −395 | 37.1% |
| Corewell Health | 932 | +230 | 22.7% |
| Humana Inc. | 872 | +131 | 21.2% |
| UnitedHealth Group, Inc. | 362 | +17 | 8.8% |
| CVS Health Corporation | 280 | −3 | 6.8% |
| Henry Ford Health System | 68 | new | 1.7% |
| Centene Corporation | 50 | +34 | 1.2% |
| McLaren Health Care Corporation | 17 | −2 | 0.4% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,971 beneficiaries in Otsego County were assigned to 37 Medicare Shared Savings Program ACOs, 72.3% of assignable Original Medicare beneficiaries. Together, roughly 88% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.