Medicare Advantage in Cass County, Iowa
932 people in Cass County, Iowa were enrolled in Medicare Advantage in October 2026, 24.8% of 3,763 eligible beneficiaries (−0.7 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 37% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 2,875 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 149 members here are in plans that terminate or leave the county. MA plans offered go from 15 to 13.
Parent organizations in Cass County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 334 | −30 | 37.2% |
| CVS Health Corporation | 303 | −65 | 33.8% |
| Centene Corporation | 153 | new | 17.1% |
| Humana Inc. | 58 | +17 | 6.5% |
| Elevance Health, Inc. | 28 | −12 | 3.1% |
| Mitchell Family Office | 21 | +3 | 2.3% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 268 beneficiaries in Cass County were assigned to 23 Medicare Shared Savings Program ACOs, 11.1% of assignable Original Medicare beneficiaries. Together, roughly 33% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.