Medicare Advantage in Knox County, Indiana
2,913 people in Knox County, Indiana were enrolled in Medicare Advantage in October 2026, 34.1% of 8,534 eligible beneficiaries (+0.4 pts since October 2025). Humana Inc. is the largest parent organization with 34% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 2,793 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 201 members here are in plans that terminate or leave the county. MA plans offered go from 35 to 33.
Parent organizations in Knox County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 984 | +110 | 34.1% |
| UnitedHealth Group, Inc. | 938 | +38 | 32.5% |
| Elevance Health, Inc. | 662 | −64 | 23.0% |
| CVS Health Corporation | 158 | −35 | 5.5% |
| UMWA Health and Retirement Funds | 76 | −5 | 2.6% |
| Centene Corporation | 65 | +14 | 2.3% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 2,838 beneficiaries in Knox County were assigned to 27 Medicare Shared Savings Program ACOs, 62.5% of assignable Original Medicare beneficiaries. Together, roughly 75% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.