Medicare Advantage in Ingham County, Michigan
36,400 people in Ingham County, Michigan were enrolled in Medicare Advantage in October 2026, 67.1% of 54,285 eligible beneficiaries (+0.6 pts since October 2025). Blue Cross Blue Shield of Michigan Mutual Ins. Co. is the largest parent organization with 46% of reported enrollment; 11 parent organizations have 11 or more members and the HHI is 3,171 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 326 members here are in plans that terminate or leave the county. MA plans offered go from 60 to 54.
Parent organizations in Ingham County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 16,516 | −1,532 | 45.5% |
| Humana Inc. | 11,284 | +1,571 | 31.1% |
| Corewell Health | 2,844 | +1,058 | 7.8% |
| CVS Health Corporation | 2,728 | +594 | 7.5% |
| Henry Ford Health System | 1,337 | +990 | 3.7% |
| UnitedHealth Group, Inc. | 583 | +300 | 1.6% |
| McLaren Health Care Corporation | 492 | +49 | 1.4% |
| Centene Corporation | 170 | +13 | 0.5% |
| Trinity Health Corporation | 165 | new | 0.5% |
| Volunteers of America National Services | 140 | +4 | 0.4% |
| Longevity Health Founders, LLC | 53 | −8 | 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, 7,714 beneficiaries in Ingham County were assigned to 83 Medicare Shared Savings Program ACOs, 62.8% 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.