Medicare Advantage in Johnson County, Indiana
17,367 people in Johnson County, Indiana were enrolled in Medicare Advantage in October 2026, 52.0% of 33,406 eligible beneficiaries (+0.3 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 42% of reported enrollment; 12 parent organizations have 11 or more members and the HHI is 2,741 (highly concentrated). For 2027, 358 members here are in plans that terminate or leave the county. MA plans offered go from 46 to 43.
Parent organizations in Johnson County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 7,202 | −43 | 41.6% |
| Humana Inc. | 4,377 | +563 | 25.3% |
| Elevance Health, Inc. | 3,178 | −757 | 18.4% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 505 | −22 | 2.9% |
| CVS Health Corporation | 463 | +128 | 2.7% |
| Devoted Health, Inc. | 457 | new | 2.6% |
| Zing Health Consolidator, Inc | 361 | +105 | 2.1% |
| SIHO Holding, Inc. | 277 | +157 | 1.6% |
| Rifkin Managed Care Holding, LLC | 207 | +2 | 1.2% |
| Centene Corporation | 193 | +77 | 1.1% |
| SNP Holdings, LLC | 48 | +2 | 0.3% |
| Franciscan Alliance, Inc. | 37 | +6 | 0.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 7,688 beneficiaries in Johnson County were assigned to 63 Medicare Shared Savings Program ACOs, 63.2% of assignable Original Medicare beneficiaries. Together, roughly 82% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.