Medicare Advantage in McLean County, Illinois
13,739 people in McLean County, Illinois were enrolled in Medicare Advantage in October 2026, 44.3% of 31,047 eligible beneficiaries (−0.6 pts since October 2025). CVS Health Corporation is the largest parent organization with 48% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 3,515 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 399 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 27 to 19.
Parent organizations in McLean County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 6,590 | +764 | 48.2% |
| Humana Inc. | 4,436 | +1,052 | 32.4% |
| UnitedHealth Group, Inc. | 1,468 | −235 | 10.7% |
| Molina Healthcare, Inc. | 589 | −55 | 4.3% |
| Health Care Service Corporation | 342 | +36 | 2.5% |
| Centene Corporation | 256 | −40 | 1.9% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 9,767 beneficiaries in McLean County were assigned to 59 Medicare Shared Savings Program ACOs, 76.8% 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.