Medicare Advantage in Mercer County, North Dakota
875 people in Mercer County, North Dakota were enrolled in Medicare Advantage in October 2026, 38.9% of 2,249 eligible beneficiaries (−0.3 pts since October 2025). Medica Holding Company is the largest parent organization with 45% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 2,671 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 255 members here are in plans that terminate or leave the county, and Blue Cross Blue Shield of Michigan Mutual Ins. Co. leaves. MA plans offered go from 19 to 11.
Parent organizations in Mercer County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Medica Holding Company | 386 | +156 | 44.6% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 160 | −175 | 18.5% |
| UnitedHealth Group, Inc. | 96 | −11 | 11.1% |
| UMWA Health and Retirement Funds | 93 | −1 | 10.7% |
| CVS Health Corporation | 76 | +41 | 8.8% |
| Sanford Health | 44 | +13 | 5.1% |
| Aware Integrated, Inc. | 11 | new | 1.3% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,078 beneficiaries in Mercer County were assigned to 8 Medicare Shared Savings Program ACOs, 87.0% of assignable Original Medicare beneficiaries. Together, roughly 92% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.