Medicare Advantage in Randolph County, Illinois
3,843 people in Randolph County, Illinois were enrolled in Medicare Advantage in October 2026, 52.5% of 7,324 eligible beneficiaries (+1.1 pts since October 2025). CVS Health Corporation is the largest parent organization with 44% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 3,476 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 1,429 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 28 to 10.
Parent organizations in Randolph County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 1,667 | −10 | 43.7% |
| UnitedHealth Group, Inc. | 1,449 | +158 | 38.0% |
| UMWA Health and Retirement Funds | 354 | −18 | 9.3% |
| Humana Inc. | 187 | +54 | 4.9% |
| Health Care Service Corporation | 73 | −26 | 1.9% |
| Molina Healthcare, Inc. | 59 | −3 | 1.5% |
| Centene Corporation | 22 | +6 | 0.6% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,469 beneficiaries in Randolph County were assigned to 22 Medicare Shared Savings Program ACOs, 43.0% 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.