Medicare Advantage in York County, South Carolina
27,068 people in York County, South Carolina were enrolled in Medicare Advantage in October 2026, 46.5% of 58,212 eligible beneficiaries (+0.2 pts since October 2025). Humana Inc. is the largest parent organization with 32% of reported enrollment; 13 parent organizations have 11 or more members and the HHI is 2,278 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 42 members here are in plans that terminate or leave the county. MA plans offered go from 48 to 48.
Parent organizations in York County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 8,602 | +1,938 | 32.0% |
| CVS Health Corporation | 7,137 | −618 | 26.5% |
| UnitedHealth Group, Inc. | 5,682 | −2,067 | 21.1% |
| Devoted Health, Inc. | 1,918 | +1,318 | 7.1% |
| Health Care Service Corporation | 1,821 | +179 | 6.8% |
| BlueCross BlueShield of South Carolina (BCBSSC) | 716 | +135 | 2.7% |
| Centene Corporation | 432 | −28 | 1.6% |
| Highmark Health | 190 | +6 | 0.7% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 142 | +8 | 0.5% |
| Molina Healthcare, Inc. | 135 | −20 | 0.5% |
| Elevance Health, Inc. | 85 | +1 | 0.3% |
| UNICO Services, Inc. | 35 | +9 | 0.1% |
| UMWA Health and Retirement Funds | 15 | 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, 12,027 beneficiaries in York County were assigned to 149 Medicare Shared Savings Program ACOs, 50.9% of assignable Original Medicare beneficiaries. Together, roughly 74% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.