Medicare Advantage in Morgan County, Illinois
3,612 people in Morgan County, Illinois were enrolled in Medicare Advantage in October 2026, 43.5% of 8,311 eligible beneficiaries (+0.4 pts since October 2025). CVS Health Corporation is the largest parent organization with 57% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 3,830 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 611 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 25 to 17.
Parent organizations in Morgan County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 2,060 | −98 | 57.5% |
| Humana Inc. | 593 | +157 | 16.5% |
| UnitedHealth Group, Inc. | 465 | +41 | 13.0% |
| Centene Corporation | 310 | +85 | 8.6% |
| Health Care Service Corporation | 117 | −37 | 3.3% |
| Molina Healthcare, Inc. | 40 | +1 | 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, 1,576 beneficiaries in Morgan County were assigned to 24 Medicare Shared Savings Program ACOs, 38.9% of assignable Original Medicare beneficiaries. Together, roughly 65% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.