Medicare Advantage in Warren County, Mississippi
4,616 people in Warren County, Mississippi were enrolled in Medicare Advantage in October 2026, 44.0% of 10,489 eligible beneficiaries (+1.0 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 40% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 2,851 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 12 members here are in plans that terminate or leave the county. MA plans offered go from 24 to 28.
Parent organizations in Warren County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 1,810 | −60 | 39.5% |
| Humana Inc. | 1,349 | −54 | 29.4% |
| Centene Corporation | 780 | −20 | 17.0% |
| Devoted Health, Inc. | 528 | new | 11.5% |
| CVS Health Corporation | 86 | −133 | 1.9% |
| Mitchell Family Office | 31 | −6 | 0.7% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 2,364 beneficiaries in Warren County were assigned to 32 Medicare Shared Savings Program ACOs, 51.0% of assignable Original Medicare beneficiaries. Together, roughly 73% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.