Medicare Advantage in Martin County, Indiana
908 people in Martin County, Indiana were enrolled in Medicare Advantage in October 2026, 35.5% of 2,559 eligible beneficiaries (+2.1 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 39% of reported enrollment; 4 parent organizations have 11 or more members and the HHI is 3,241 (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 35 to 31.
Parent organizations in Martin County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 337 | +43 | 39.0% |
| Humana Inc. | 288 | +62 | 33.4% |
| Elevance Health, Inc. | 210 | −49 | 24.3% |
| CVS Health Corporation | 28 | +3 | 3.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 782 beneficiaries in Martin County were assigned to 10 Medicare Shared Savings Program ACOs, 55.3% of assignable Original Medicare beneficiaries. Together, roughly 71% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.