Medicare Advantage in Fairfield County, South Carolina
3,524 people in Fairfield County, South Carolina were enrolled in Medicare Advantage in October 2026, 54.8% of 6,428 eligible beneficiaries (+0.1 pts since October 2025). Humana Inc. is the largest parent organization with 36% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 2,490 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 116 members here are in plans that terminate or leave the county. MA plans offered go from 45 to 45.
Parent organizations in Fairfield County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 1,262 | +223 | 36.3% |
| UnitedHealth Group, Inc. | 1,039 | −225 | 29.9% |
| BlueCross BlueShield of South Carolina (BCBSSC) | 396 | +83 | 11.4% |
| CVS Health Corporation | 375 | −107 | 10.8% |
| Centene Corporation | 132 | −37 | 3.8% |
| Health Care Service Corporation | 89 | +23 | 2.6% |
| Devoted Health, Inc. | 84 | new | 2.4% |
| UNICO Services, Inc. | 60 | +24 | 1.7% |
| Molina Healthcare, Inc. | 23 | +2 | 0.7% |
| Independence Health Group, Inc. | 15 | −2 | 0.4% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 917 beneficiaries in Fairfield County were assigned to 22 Medicare Shared Savings Program ACOs, 41.0% 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.