Medicare Advantage in Jersey County, Illinois
2,689 people in Jersey County, Illinois were enrolled in Medicare Advantage in October 2026, 46.2% of 5,815 eligible beneficiaries (+1.7 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 53% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 3,820 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 108 members here are in plans that terminate or leave the county. MA plans offered go from 42 to 35.
Parent organizations in Jersey County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 1,410 | +204 | 53.3% |
| CVS Health Corporation | 774 | −223 | 29.3% |
| Humana Inc. | 275 | +121 | 10.4% |
| Devoted Health, Inc. | 65 | +52 | 2.5% |
| Lumeris Group Holdings Corporation | 53 | +15 | 2.0% |
| Centene Corporation | 39 | +15 | 1.5% |
| Molina Healthcare, Inc. | 29 | +4 | 1.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,981 beneficiaries in Jersey County were assigned to 14 Medicare Shared Savings Program ACOs, 76.6% of assignable Original Medicare beneficiaries. Together, roughly 87% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.