Medicare Advantage in Muskegon County, Michigan
33,051 people in Muskegon County, Michigan were enrolled in Medicare Advantage in October 2026, 75.5% of 43,801 eligible beneficiaries (+1.2 pts since October 2025). Corewell Health is the largest parent organization with 38% of reported enrollment; 13 parent organizations have 11 or more members and the HHI is 2,213 (highly concentrated). For 2027, 1,657 members here are in plans that terminate or leave the county. MA plans offered go from 53 to 52.
Parent organizations in Muskegon County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Corewell Health | 12,586 | +876 | 38.2% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 7,064 | −2,727 | 21.4% |
| Henry Ford Health System | 3,346 | +1,240 | 10.1% |
| Humana Inc. | 2,733 | +131 | 8.3% |
| CVS Health Corporation | 2,517 | +168 | 7.6% |
| Trinity Health Corporation | 2,093 | +631 | 6.3% |
| UnitedHealth Group, Inc. | 1,607 | +781 | 4.9% |
| Centene Corporation | 409 | +31 | 1.2% |
| Molina Healthcare, Inc. | 258 | −84 | 0.8% |
| LifeCircles | 215 | +7 | 0.7% |
| Curana Health Holdings, LLC | 67 | new | 0.2% |
| Longevity Health Founders, LLC | 53 | +12 | 0.2% |
| Elevance Health, Inc. | 20 | 0 | 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, 5,082 beneficiaries in Muskegon County were assigned to 69 Medicare Shared Savings Program ACOs, 63.3% of assignable Original Medicare beneficiaries. Together, roughly 91% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.