Medicare Advantage in Union County, Iowa
873 people in Union County, Iowa were enrolled in Medicare Advantage in October 2026, 28.1% of 3,106 eligible beneficiaries (−2.6 pts since October 2025). CVS Health Corporation is the largest parent organization with 44% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 3,316 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 14 members here are in plans that terminate or leave the county. MA plans offered go from 14 to 16.
Parent organizations in Union County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 368 | −44 | 44.2% |
| Centene Corporation | 289 | +230 | 34.7% |
| Elevance Health, Inc. | 82 | −27 | 9.8% |
| Humana Inc. | 62 | +18 | 7.4% |
| Mitchell Family Office | 21 | +10 | 2.5% |
| Trinity Health Corporation | 11 | new | 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, 1,441 beneficiaries in Union County were assigned to 23 Medicare Shared Savings Program ACOs, 84.3% of assignable Original Medicare beneficiaries. Together, roughly 89% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.