Medicare Advantage in Madison County, Indiana
19,341 people in Madison County, Indiana were enrolled in Medicare Advantage in October 2026, 61.5% of 31,428 eligible beneficiaries (+0.4 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 30% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 2,113 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 196 members here are in plans that terminate or leave the county. MA plans offered go from 46 to 43.
Parent organizations in Madison County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 5,829 | −579 | 30.3% |
| Humana Inc. | 5,063 | +521 | 26.3% |
| Elevance Health, Inc. | 3,177 | −175 | 16.5% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 2,743 | −105 | 14.2% |
| Zing Health Consolidator, Inc | 634 | +212 | 3.3% |
| CVS Health Corporation | 607 | −157 | 3.2% |
| Devoted Health, Inc. | 467 | new | 2.4% |
| SIHO Holding, Inc. | 379 | +174 | 2.0% |
| Centene Corporation | 265 | +30 | 1.4% |
| Rifkin Managed Care Holding, LLC | 102 | −7 | 0.5% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 5,090 beneficiaries in Madison County were assigned to 47 Medicare Shared Savings Program ACOs, 55.6% of assignable Original Medicare beneficiaries. Together, roughly 83% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.