Medicare Advantage in Scott County, Illinois
451 people in Scott County, Illinois were enrolled in Medicare Advantage in October 2026, 40.8% of 1,105 eligible beneficiaries (+0.4 pts since October 2025). CVS Health Corporation is the largest parent organization with 73% of reported enrollment; 4 parent organizations have 11 or more members and the HHI is 5,612 (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 27 to 20.
Parent organizations in Scott County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 296 | +32 | 73.3% |
| UnitedHealth Group, Inc. | 43 | −22 | 10.6% |
| Humana Inc. | 36 | +2 | 8.9% |
| Centene Corporation | 29 | −2 | 7.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 306 beneficiaries in Scott County were assigned to 8 Medicare Shared Savings Program ACOs, 52.3% of assignable Original Medicare beneficiaries. Together, roughly 72% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.