Medicare Advantage in Mercer County, West Virginia
9,624 people in Mercer County, West Virginia were enrolled in Medicare Advantage in October 2026, 59.6% of 16,141 eligible beneficiaries (+0.5 pts since October 2025). Humana Inc. is the largest parent organization with 46% of reported enrollment; 9 parent organizations have 11 or more members and the HHI is 2,977 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 30 members here are in plans that terminate or leave the county. MA plans offered go from 34 to 36.
Parent organizations in Mercer County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 4,390 | +196 | 45.8% |
| CVS Health Corporation | 2,069 | +95 | 21.6% |
| UnitedHealth Group, Inc. | 1,706 | −97 | 17.8% |
| Highmark Health | 831 | −124 | 8.7% |
| UMWA Health and Retirement Funds | 368 | −26 | 3.8% |
| SNP Holdings, LLC | 98 | +6 | 1.0% |
| The Health Plan of West Virginia, Inc. | 79 | +37 | 0.8% |
| Elevance Health, Inc. | 23 | +3 | 0.2% |
| C & O Employees' Hospital Association | 14 | +1 | 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, 1,469 beneficiaries in Mercer County were assigned to 46 Medicare Shared Savings Program ACOs, 26.6% of assignable Original Medicare beneficiaries. Together, roughly 70% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.