Medicare Advantage in Antrim County, Michigan
5,072 people in Antrim County, Michigan were enrolled in Medicare Advantage in October 2026, 59.8% of 8,486 eligible beneficiaries (+0.00 pts since October 2025). Blue Cross Blue Shield of Michigan Mutual Ins. Co. is the largest parent organization with 34% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 2,727 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 1,666 members here are in plans that terminate or leave the county. MA plans offered go from 42 to 38.
Parent organizations in Antrim County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 1,729 | −551 | 34.4% |
| Corewell Health | 1,616 | +287 | 32.2% |
| Humana Inc. | 1,064 | +306 | 21.2% |
| UnitedHealth Group, Inc. | 287 | −20 | 5.7% |
| CVS Health Corporation | 255 | −39 | 5.1% |
| Henry Ford Health System | 61 | new | 1.2% |
| McLaren Health Care Corporation | 12 | +1 | 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, 615 beneficiaries in Antrim County were assigned to 64 Medicare Shared Savings Program ACOs, 23.4% of assignable Original Medicare beneficiaries. Together, roughly 69% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.