Medicare Advantage in Allendale County, South Carolina
1,278 people in Allendale County, South Carolina were enrolled in Medicare Advantage in October 2026, 59.8% of 2,138 eligible beneficiaries (−1.9 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 59% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 4,426 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 37 members here are in plans that terminate or leave the county. MA plans offered go from 38 to 39.
Parent organizations in Allendale County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 723 | −137 | 58.9% |
| Humana Inc. | 374 | +67 | 30.5% |
| CVS Health Corporation | 45 | −15 | 3.7% |
| Devoted Health, Inc. | 39 | new | 3.2% |
| Centene Corporation | 31 | −4 | 2.5% |
| Molina Healthcare, Inc. | 16 | new | 1.3% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 67 beneficiaries in Allendale County were assigned to 14 Medicare Shared Savings Program ACOs, 11.0% of assignable Original Medicare beneficiaries. Together, roughly 64% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.