Medicare Advantage in Branch County, Michigan
6,483 people in Branch County, Michigan were enrolled in Medicare Advantage in October 2026, 59.6% of 10,876 eligible beneficiaries (+0.5 pts since October 2025). Blue Cross Blue Shield of Michigan Mutual Ins. Co. is the largest parent organization with 42% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 2,501 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 99 members here are in plans that terminate or leave the county. MA plans offered go from 60 to 56.
Parent organizations in Branch County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 2,668 | −148 | 41.5% |
| Humana Inc. | 1,174 | +231 | 18.3% |
| Corewell Health | 871 | +137 | 13.6% |
| UnitedHealth Group, Inc. | 712 | −118 | 11.1% |
| CVS Health Corporation | 707 | +39 | 11.0% |
| Centene Corporation | 223 | −5 | 3.5% |
| Henry Ford Health System | 67 | new | 1.0% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,294 beneficiaries in Branch County were assigned to 53 Medicare Shared Savings Program ACOs, 39.6% of assignable Original Medicare beneficiaries. Together, roughly 76% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.