Medicare Advantage in Monroe County, Michigan
23,728 people in Monroe County, Michigan were enrolled in Medicare Advantage in October 2026, 62.2% of 38,138 eligible beneficiaries (+0.2 pts since October 2025). Blue Cross Blue Shield of Michigan Mutual Ins. Co. is the largest parent organization with 42% of reported enrollment; 13 parent organizations have 11 or more members and the HHI is 2,429 (highly concentrated). For 2027, 2,398 members here are in plans that terminate or leave the county, and MEDICAL MUTUAL OF OHIO leaves. MA plans offered go from 53 to 52.
Parent organizations in Monroe County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 9,874 | −259 | 41.7% |
| Humana Inc. | 4,885 | +1,026 | 20.6% |
| MEDICAL MUTUAL OF OHIO | 2,270 | +35 | 9.6% |
| Henry Ford Health System | 2,116 | +634 | 8.9% |
| CVS Health Corporation | 1,636 | −752 | 6.9% |
| UnitedHealth Group, Inc. | 1,142 | −213 | 4.8% |
| Corewell Health | 838 | +121 | 3.5% |
| Centene Corporation | 493 | +20 | 2.1% |
| Elevance Health, Inc. | 157 | +8 | 0.7% |
| Trinity Health Corporation | 157 | +74 | 0.7% |
| Molina Healthcare, Inc. | 43 | −16 | 0.2% |
| Curana Health Holdings, LLC | 25 | +4 | 0.1% |
| Utd Methodist Retirement Communities of SE MI | 22 | +6 | 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, 7,116 beneficiaries in Monroe County were assigned to 57 Medicare Shared Savings Program ACOs, 63.4% of assignable Original Medicare beneficiaries. Together, roughly 86% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.