Medicare Advantage in Clinton County, Iowa
5,107 people in Clinton County, Iowa were enrolled in Medicare Advantage in October 2026, 43.2% of 11,827 eligible beneficiaries (−0.4 pts since October 2025). CVS Health Corporation is the largest parent organization with 37% of reported enrollment; 11 parent organizations have 11 or more members and the HHI is 2,225 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 595 members here are in plans that terminate or leave the county, and Blue Cross Blue Shield of Michigan Mutual Ins. Co., Molina Healthcare, Inc. leave. MA plans offered go from 24 to 26.
Parent organizations in Clinton County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 1,862 | +777 | 36.7% |
| UnitedHealth Group, Inc. | 1,147 | −1,164 | 22.6% |
| Humana Inc. | 606 | +58 | 11.9% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 555 | −24 | 10.9% |
| Trinity Health Corporation | 429 | +257 | 8.5% |
| Centene Corporation | 269 | +153 | 5.3% |
| Medical Associates Clinic, P.C. | 94 | +9 | 1.9% |
| Elevance Health, Inc. | 74 | −27 | 1.5% |
| Molina Healthcare, Inc. | 16 | new | 0.3% |
| Iowa Health System | 11 | new | 0.2% |
| Health Care Service Corporation | 11 | new | 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, 3,486 beneficiaries in Clinton County were assigned to 34 Medicare Shared Savings Program ACOs, 66.2% of assignable Original Medicare beneficiaries. Together, roughly 81% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.