Medicare Advantage in Washington County, Mississippi
5,874 people in Washington County, Mississippi were enrolled in Medicare Advantage in October 2026, 54.1% of 10,862 eligible beneficiaries (+0.8 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 52% of reported enrollment; 4 parent organizations have 11 or more members and the HHI is 4,250 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 0 members here are in plans that terminate or leave the county. MA plans offered go from 21 to 25.
Parent organizations in Washington County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 3,042 | +375 | 52.1% |
| Humana Inc. | 2,244 | +148 | 38.4% |
| Centene Corporation | 458 | +54 | 7.8% |
| CVS Health Corporation | 99 | −177 | 1.7% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,941 beneficiaries in Washington County were assigned to 37 Medicare Shared Savings Program ACOs, 51.5% of assignable Original Medicare beneficiaries. Together, roughly 78% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.