Medicare Advantage in Hillsdale County, Michigan
7,705 people in Hillsdale County, Michigan were enrolled in Medicare Advantage in October 2026, 67.3% of 11,449 eligible beneficiaries (+1.5 pts since October 2025). Blue Cross Blue Shield of Michigan Mutual Ins. Co. is the largest parent organization with 31% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 2,077 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 97 members here are in plans that terminate or leave the county, and MEDICAL MUTUAL OF OHIO leaves. MA plans offered go from 60 to 59.
Parent organizations in Hillsdale County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 2,375 | −447 | 31.0% |
| Corewell Health | 1,827 | +187 | 23.8% |
| Humana Inc. | 1,457 | +241 | 19.0% |
| CVS Health Corporation | 659 | +95 | 8.6% |
| UnitedHealth Group, Inc. | 652 | −57 | 8.5% |
| Henry Ford Health System | 457 | +281 | 6.0% |
| Centene Corporation | 171 | −14 | 2.2% |
| MEDICAL MUTUAL OF OHIO | 36 | +12 | 0.5% |
| Elevance Health, Inc. | 19 | +1 | 0.2% |
| United Methodist Retirement Communities, Inc. | 12 | new | 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, 2,083 beneficiaries in Hillsdale County were assigned to 42 Medicare Shared Savings Program ACOs, 65.6% 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.