Medicare Advantage in Lee County, Illinois
3,520 people in Lee County, Illinois were enrolled in Medicare Advantage in October 2026, 40.1% of 8,784 eligible beneficiaries (+0.5 pts since October 2025). CVS Health Corporation is the largest parent organization with 50% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 3,304 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 64 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 32 to 24.
Parent organizations in Lee County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 1,738 | +61 | 49.8% |
| UnitedHealth Group, Inc. | 730 | −100 | 20.9% |
| Humana Inc. | 657 | +104 | 18.8% |
| Centene Corporation | 138 | +1 | 4.0% |
| Health Care Service Corporation | 103 | −17 | 3.0% |
| Molina Healthcare, Inc. | 63 | +5 | 1.8% |
| Devoted Health, Inc. | 60 | new | 1.7% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 894 beneficiaries in Lee County were assigned to 41 Medicare Shared Savings Program ACOs, 22.9% of assignable Original Medicare beneficiaries. Together, roughly 54% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.