Medicare Advantage in Marshall County, Indiana
6,143 people in Marshall County, Indiana were enrolled in Medicare Advantage in October 2026, 57.7% of 10,642 eligible beneficiaries (−0.6 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 54% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 3,436 (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 40 to 35.
Parent organizations in Marshall County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 3,283 | −94 | 53.5% |
| Humana Inc. | 1,122 | +157 | 18.3% |
| Devoted Health, Inc. | 637 | +570 | 10.4% |
| Elevance Health, Inc. | 630 | −635 | 10.3% |
| CVS Health Corporation | 249 | +26 | 4.1% |
| Centene Corporation | 120 | +52 | 2.0% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 34 | +3 | 0.6% |
| Rifkin Managed Care Holding, LLC | 31 | +3 | 0.5% |
| Health Care Service Corporation | 13 | new | 0.2% |
| Trinity Health Corporation | 13 | +1 | 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, 2,061 beneficiaries in Marshall County were assigned to 38 Medicare Shared Savings Program ACOs, 63.8% of assignable Original Medicare beneficiaries. Together, roughly 85% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.