Medicare Advantage in Genesee County, Michigan
67,608 people in Genesee County, Michigan were enrolled in Medicare Advantage in October 2026, 69.7% of 96,962 eligible beneficiaries (+0.7 pts since October 2025). Blue Cross Blue Shield of Michigan Mutual Ins. Co. is the largest parent organization with 46% of reported enrollment; 15 parent organizations have 11 or more members and the HHI is 2,659 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 808 members here are in plans that terminate or leave the county. MA plans offered go from 68 to 64.
Parent organizations in Genesee County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 30,736 | −2,924 | 45.6% |
| Henry Ford Health System | 11,876 | +2,683 | 17.6% |
| Humana Inc. | 8,786 | +1,646 | 13.0% |
| CVS Health Corporation | 4,360 | +268 | 6.5% |
| Corewell Health | 3,298 | +402 | 4.9% |
| UnitedHealth Group, Inc. | 3,166 | −365 | 4.7% |
| Centene Corporation | 1,973 | −173 | 2.9% |
| Molina Healthcare, Inc. | 1,316 | −228 | 2.0% |
| Zing Health Consolidator, Inc | 1,163 | +359 | 1.7% |
| Ascension Health Alliance | 261 | +36 | 0.4% |
| McLaren Health Care Corporation | 232 | −260 | 0.3% |
| Curana Health Holdings, LLC | 120 | +16 | 0.2% |
| Trinity Health Corporation | 83 | +71 | 0.1% |
| Longevity Health Founders, LLC | 74 | +27 | 0.1% |
| Elevance Health, Inc. | 15 | +2 | 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, 14,826 beneficiaries in Genesee County were assigned to 113 Medicare Shared Savings Program ACOs, 62.9% of assignable Original Medicare beneficiaries. Together, roughly 89% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.