Medicare Advantage in Bartholomew County, Indiana
8,045 people in Bartholomew County, Indiana were enrolled in Medicare Advantage in October 2026, 46.0% of 17,506 eligible beneficiaries (+1.0 pts since October 2025). Humana Inc. is the largest parent organization with 46% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 3,242 (highly concentrated). For 2027, 2,129 members here are in plans that terminate or leave the county. MA plans offered go from 35 to 32.
Parent organizations in Bartholomew County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 3,681 | +736 | 45.9% |
| UnitedHealth Group, Inc. | 2,451 | +72 | 30.6% |
| SIHO Holding, Inc. | 869 | +458 | 10.8% |
| Elevance Health, Inc. | 709 | −944 | 8.8% |
| CVS Health Corporation | 150 | −18 | 1.9% |
| Centene Corporation | 124 | +49 | 1.5% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 36 | −3 | 0.4% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 5,536 beneficiaries in Bartholomew County were assigned to 58 Medicare Shared Savings Program ACOs, 73.8% of assignable Original Medicare beneficiaries. Together, roughly 86% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.