Medicare Advantage in Spencer County, Indiana
2,275 people in Spencer County, Indiana were enrolled in Medicare Advantage in October 2026, 43.8% of 5,196 eligible beneficiaries (−0.4 pts since October 2025). Humana Inc. is the largest parent organization with 43% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 2,950 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 0 members here are in plans that terminate or leave the county. MA plans offered go from 39 to 33.
Parent organizations in Spencer County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 953 | +94 | 42.6% |
| UnitedHealth Group, Inc. | 659 | +31 | 29.5% |
| Elevance Health, Inc. | 296 | −197 | 13.2% |
| CVS Health Corporation | 179 | +14 | 8.0% |
| SIHO Holding, Inc. | 100 | new | 4.5% |
| UMWA Health and Retirement Funds | 36 | 0 | 1.6% |
| Centene Corporation | 12 | −10 | 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, 1,415 beneficiaries in Spencer County were assigned to 20 Medicare Shared Savings Program ACOs, 64.2% of assignable Original Medicare beneficiaries. Together, roughly 80% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.