Medicare Advantage in Chickasaw County, Iowa
738 people in Chickasaw County, Iowa were enrolled in Medicare Advantage in October 2026, 24.1% of 3,064 eligible beneficiaries (−3.6 pts since October 2025). CVS Health Corporation is the largest parent organization with 38% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 2,603 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 277 members here are in plans that terminate or leave the county, and CVS Health Corporation leaves. MA plans offered go from 18 to 9.
Parent organizations in Chickasaw County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 270 | +194 | 38.2% |
| UnitedHealth Group, Inc. | 182 | −197 | 25.7% |
| Trinity Health Corporation | 121 | +103 | 17.1% |
| Humana Inc. | 91 | +39 | 12.9% |
| Centene Corporation | 32 | +17 | 4.5% |
| Mitchell Family Office | 11 | new | 1.6% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 784 beneficiaries in Chickasaw County were assigned to 10 Medicare Shared Savings Program ACOs, 47.4% of assignable Original Medicare beneficiaries. Together, roughly 60% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.