Medicare Advantage in Harrison County, Indiana
4,457 people in Harrison County, Indiana were enrolled in Medicare Advantage in October 2026, 44.5% of 10,017 eligible beneficiaries (+0.01 pts since October 2025). Humana Inc. is the largest parent organization with 39% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 3,142 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 556 members here are in plans that terminate or leave the county. MA plans offered go from 34 to 30.
Parent organizations in Harrison County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 1,708 | +486 | 38.7% |
| Elevance Health, Inc. | 1,628 | −257 | 36.8% |
| UnitedHealth Group, Inc. | 737 | −92 | 16.7% |
| Devoted Health, Inc. | 88 | new | 2.0% |
| CVS Health Corporation | 78 | −149 | 1.8% |
| SNP Holdings, LLC | 65 | +19 | 1.5% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 59 | +7 | 1.3% |
| Centene Corporation | 56 | +25 | 1.3% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,765 beneficiaries in Harrison County were assigned to 35 Medicare Shared Savings Program ACOs, 42.7% of assignable Original Medicare beneficiaries. Together, roughly 68% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.