Medicare Advantage in Grundy County, Iowa
1,167 people in Grundy County, Iowa were enrolled in Medicare Advantage in October 2026, 37.2% of 3,136 eligible beneficiaries (−0.3 pts since October 2025). CVS Health Corporation is the largest parent organization with 33% of reported enrollment; 5 parent organizations have 11 or more members and the HHI is 2,653 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 292 members here are in plans that terminate or leave the county, and Blue Cross Blue Shield of Michigan Mutual Ins. Co. leaves. MA plans offered go from 23 to 25.
Parent organizations in Grundy County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 376 | +148 | 33.0% |
| UnitedHealth Group, Inc. | 329 | −269 | 28.8% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 280 | +69 | 24.5% |
| Humana Inc. | 129 | +45 | 11.3% |
| Trinity Health Corporation | 27 | new | 2.4% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 508 beneficiaries in Grundy County were assigned to 15 Medicare Shared Savings Program ACOs, 30.8% of assignable Original Medicare beneficiaries. Together, roughly 57% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.