Medicare Advantage in Linn County, Iowa
23,515 people in Linn County, Iowa were enrolled in Medicare Advantage in October 2026, 48.3% of 48,701 eligible beneficiaries (−0.6 pts since October 2025). CVS Health Corporation is the largest parent organization with 42% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 2,586 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 3,768 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 19 to 21.
Parent organizations in Linn County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| CVS Health Corporation | 9,764 | +1,872 | 41.7% |
| Humana Inc. | 4,822 | +911 | 20.6% |
| UnitedHealth Group, Inc. | 3,473 | −2,881 | 14.8% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 3,145 | −284 | 13.4% |
| Centene Corporation | 904 | +578 | 3.9% |
| Medical Associates Clinic, P.C. | 810 | +21 | 3.5% |
| Molina Healthcare, Inc. | 210 | new | 0.9% |
| Elevance Health, Inc. | 198 | −122 | 0.8% |
| Mitchell Family Office | 78 | 0 | 0.3% |
| Iowa Health System | 37 | 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, 12,934 beneficiaries in Linn County were assigned to 76 Medicare Shared Savings Program ACOs, 69.3% of assignable Original Medicare beneficiaries. Together, roughly 84% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.