Medicare Advantage in Richland County, South Carolina
34,768 people in Richland County, South Carolina were enrolled in Medicare Advantage in October 2026, 43.1% of 80,649 eligible beneficiaries (+0.8 pts since October 2025). Humana Inc. is the largest parent organization with 45% of reported enrollment; 13 parent organizations have 11 or more members and the HHI is 2,967 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 129 members here are in plans that terminate or leave the county. MA plans offered go from 38 to 39.
Parent organizations in Richland County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 15,478 | +3,117 | 44.7% |
| UnitedHealth Group, Inc. | 9,146 | −1,513 | 26.4% |
| BlueCross BlueShield of South Carolina (BCBSSC) | 4,200 | +622 | 12.1% |
| CVS Health Corporation | 3,507 | −690 | 10.1% |
| Centene Corporation | 1,389 | +79 | 4.0% |
| Molina Healthcare, Inc. | 263 | −57 | 0.8% |
| Prisma Health | 204 | −4 | 0.6% |
| Independence Health Group, Inc. | 143 | −41 | 0.4% |
| UNICO Services, Inc. | 84 | +4 | 0.2% |
| Missouri Healthcare Advisors, LLC | 70 | +22 | 0.2% |
| Elevance Health, Inc. | 64 | −3 | 0.2% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 39 | −4 | 0.1% |
| Highmark Health | 17 | 0 | under 0.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 3,968 beneficiaries in Richland County were assigned to 131 Medicare Shared Savings Program ACOs, 11.9% of assignable Original Medicare beneficiaries. Together, roughly 50% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.