Medicare Advantage in Iroquois County, Illinois
2,413 people in Iroquois County, Illinois were enrolled in Medicare Advantage in October 2026, 33.2% of 7,260 eligible beneficiaries (−0.5 pts since October 2025). CVS Health Corporation is the largest parent organization with 42% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 2,634 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 394 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 28 to 21.
Parent organizations in Iroquois County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 991 | +193 | 41.5% |
| UnitedHealth Group, Inc. | 531 | +99 | 22.3% |
| Humana Inc. | 427 | +88 | 17.9% |
| Centene Corporation | 163 | −47 | 6.8% |
| Health Care Service Corporation | 120 | −27 | 5.0% |
| Molina Healthcare, Inc. | 90 | −1 | 3.8% |
| Devoted Health, Inc. | 64 | new | 2.7% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 2,488 beneficiaries in Iroquois County were assigned to 28 Medicare Shared Savings Program ACOs, 62.9% of assignable Original Medicare beneficiaries. Together, roughly 75% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.