Medicare Advantage in McCormick County, South Carolina
2,361 people in McCormick County, South Carolina were enrolled in Medicare Advantage in October 2026, 48.6% of 4,855 eligible beneficiaries (−0.2 pts since October 2025). Humana Inc. is the largest parent organization with 36% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 2,447 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 0 members here are in plans that terminate or leave the county. MA plans offered go from 37 to 39.
Parent organizations in McCormick County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 844 | +187 | 36.4% |
| UnitedHealth Group, Inc. | 582 | −268 | 25.1% |
| Devoted Health, Inc. | 452 | +246 | 19.5% |
| Centene Corporation | 171 | −35 | 7.4% |
| CVS Health Corporation | 168 | −93 | 7.2% |
| Elevance Health, Inc. | 51 | +6 | 2.2% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 35 | −6 | 1.5% |
| Molina Healthcare, Inc. | 17 | new | 0.7% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,218 beneficiaries in McCormick County were assigned to 41 Medicare Shared Savings Program ACOs, 63.8% of assignable Original Medicare beneficiaries. Together, roughly 81% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.