Medicare Advantage in Florence County, South Carolina
15,254 people in Florence County, South Carolina were enrolled in Medicare Advantage in October 2026, 47.0% of 32,425 eligible beneficiaries (+0.1 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 44% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 3,205 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 677 members here are in plans that terminate or leave the county. MA plans offered go from 32 to 32.
Parent organizations in Florence County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 6,651 | −693 | 43.8% |
| Humana Inc. | 5,118 | +1,168 | 33.7% |
| BlueCross BlueShield of South Carolina (BCBSSC) | 1,220 | +385 | 8.0% |
| Centene Corporation | 1,008 | +235 | 6.6% |
| CVS Health Corporation | 951 | −743 | 6.3% |
| Molina Healthcare, Inc. | 134 | −14 | 0.9% |
| Independence Health Group, Inc. | 85 | −23 | 0.6% |
| Elevance Health, Inc. | 15 | −3 | 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, 6,087 beneficiaries in Florence County were assigned to 61 Medicare Shared Savings Program ACOs, 44.5% of assignable Original Medicare beneficiaries. Together, roughly 71% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.