Medicare Advantage in Jackson County, Illinois
5,714 people in Jackson County, Illinois were enrolled in Medicare Advantage in October 2026, 51.5% of 11,097 eligible beneficiaries (+0.8 pts since October 2025). CVS Health Corporation is the largest parent organization with 56% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 3,710 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 636 members here are in plans that terminate or leave the county, and Health Care Service Corporation leaves. MA plans offered go from 23 to 15.
Parent organizations in Jackson County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 3,195 | +282 | 56.3% |
| UnitedHealth Group, Inc. | 1,149 | −48 | 20.2% |
| Humana Inc. | 460 | +82 | 8.1% |
| Health Care Service Corporation | 318 | −100 | 5.6% |
| Centene Corporation | 258 | +89 | 4.5% |
| UMWA Health and Retirement Funds | 152 | −5 | 2.7% |
| Molina Healthcare, Inc. | 144 | +8 | 2.5% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 646 beneficiaries in Jackson County were assigned to 41 Medicare Shared Savings Program ACOs, 14.3% of assignable Original Medicare beneficiaries. Together, roughly 58% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.