Medicare Advantage in Walthall County, Mississippi
1,735 people in Walthall County, Mississippi were enrolled in Medicare Advantage in October 2026, 48.4% of 3,583 eligible beneficiaries (−0.1 pts since October 2025). Humana Inc. is the largest parent organization with 66% of reported enrollment; 5 parent organizations have 11 or more members and the HHI is 4,784 (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 29 to 32.
Parent organizations in Walthall County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 1,129 | +29 | 66.4% |
| UnitedHealth Group, Inc. | 277 | −27 | 16.3% |
| Centene Corporation | 149 | +16 | 8.8% |
| Health Care Service Corporation | 74 | +28 | 4.4% |
| CVS Health Corporation | 72 | −19 | 4.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 869 beneficiaries in Walthall County were assigned to 17 Medicare Shared Savings Program ACOs, 61.2% of assignable Original Medicare beneficiaries. Together, roughly 80% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.