Medicare Advantage in Attala County, Mississippi
2,162 people in Attala County, Mississippi were enrolled in Medicare Advantage in October 2026, 48.4% of 4,469 eligible beneficiaries (+2.0 pts since October 2025). Humana Inc. is the largest parent organization with 51% of reported enrollment; 4 parent organizations have 11 or more members and the HHI is 3,817 (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 26 to 32.
Parent organizations in Attala County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 1,090 | +141 | 51.1% |
| UnitedHealth Group, Inc. | 666 | +41 | 31.2% |
| Centene Corporation | 324 | −6 | 15.2% |
| CVS Health Corporation | 55 | −28 | 2.6% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,404 beneficiaries in Attala County were assigned to 19 Medicare Shared Savings Program ACOs, 70.9% of assignable Original Medicare beneficiaries. Together, roughly 85% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.