Medicare Advantage in Posey County, Indiana
2,591 people in Posey County, Indiana were enrolled in Medicare Advantage in October 2026, 40.5% of 6,404 eligible beneficiaries (+0.9 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 35% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 2,492 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 0 members here are in plans that terminate or leave the county. MA plans offered go from 41 to 36.
Parent organizations in Posey County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 884 | +4 | 34.7% |
| Humana Inc. | 713 | +63 | 28.0% |
| SIHO Holding, Inc. | 432 | +150 | 17.0% |
| Elevance Health, Inc. | 347 | −71 | 13.6% |
| CVS Health Corporation | 142 | −30 | 5.6% |
| Centene Corporation | 30 | −10 | 1.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,213 beneficiaries in Posey County were assigned to 16 Medicare Shared Savings Program ACOs, 39.8% of assignable Original Medicare beneficiaries. Together, roughly 64% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.