Medicare Advantage in Ontonagon County, Michigan
1,177 people in Ontonagon County, Michigan were enrolled in Medicare Advantage in October 2026, 46.6% of 2,525 eligible beneficiaries (−1.0 pts since October 2025). Humana Inc. is the largest parent organization with 40% of reported enrollment; 5 parent organizations have 11 or more members and the HHI is 3,271 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 223 members here are in plans that terminate or leave the county, and CVS Health Corporation leaves. MA plans offered go from 13 to 10.
Parent organizations in Ontonagon County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 459 | +238 | 39.9% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 440 | −107 | 38.3% |
| CVS Health Corporation | 129 | +83 | 11.2% |
| DLP Marquette Health Plan, LLC | 103 | new | 9.0% |
| UnitedHealth Group, Inc. | 18 | −215 | 1.6% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 285 beneficiaries in Ontonagon County were assigned to 24 Medicare Shared Savings Program ACOs, 27.4% of assignable Original Medicare beneficiaries. Together, roughly 61% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.