Medicare Advantage in Vermilion County, Illinois
10,068 people in Vermilion County, Illinois were enrolled in Medicare Advantage in October 2026, 56.5% of 17,834 eligible beneficiaries (+0.01 pts since October 2025). CVS Health Corporation is the largest parent organization with 63% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 4,299 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 853 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 22 to 18.
Parent organizations in Vermilion County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 6,287 | +3,668 | 62.8% |
| Humana Inc. | 1,328 | +649 | 13.3% |
| Centene Corporation | 1,015 | +119 | 10.1% |
| Molina Healthcare, Inc. | 637 | −72 | 6.4% |
| UnitedHealth Group, Inc. | 611 | −435 | 6.1% |
| Health Care Service Corporation | 137 | +37 | 1.4% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 4,069 beneficiaries in Vermilion County were assigned to 38 Medicare Shared Savings Program ACOs, 71.6% of assignable Original Medicare beneficiaries. Together, roughly 88% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.