Medicare Advantage in Buena Vista County, Iowa
832 people in Buena Vista County, Iowa were enrolled in Medicare Advantage in October 2026, 20.3% of 4,096 eligible beneficiaries (−0.9 pts since October 2025). Humana Inc. is the largest parent organization with 30% of reported enrollment; 5 parent organizations have 11 or more members and the HHI is 2,535 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 162 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 14 to 13.
Parent organizations in Buena Vista County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Humana Inc. | 245 | +90 | 30.5% |
| UnitedHealth Group, Inc. | 239 | −67 | 29.8% |
| CVS Health Corporation | 166 | −83 | 20.7% |
| Blue Cross Blue Shield of Michigan Mutual Ins. Co. | 136 | +55 | 16.9% |
| Elevance Health, Inc. | 17 | −19 | 2.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 178 beneficiaries in Buena Vista County were assigned to 20 Medicare Shared Savings Program ACOs, 7.0% of assignable Original Medicare beneficiaries. Together, roughly 26% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.