Medicare Advantage in Linn County, Missouri
1,000 people in Linn County, Missouri were enrolled in Medicare Advantage in October 2026, 30.5% of 3,279 eligible beneficiaries (+0.3 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 76% of reported enrollment; 5 parent organizations have 11 or more members and the HHI is 6,036 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 15 members here are in plans that terminate or leave the county. MA plans offered go from 18 to 19.
Parent organizations in Linn County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 754 | +62 | 76.2% |
| CVS Health Corporation | 124 | +41 | 12.5% |
| Humana Inc. | 77 | +24 | 7.8% |
| Consolidated Assoc of Railroad Employees HC | 19 | 0 | 1.9% |
| Elevance Health, Inc. | 15 | −92 | 1.5% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,117 beneficiaries in Linn County were assigned to 22 Medicare Shared Savings Program ACOs, 59.4% of assignable Original Medicare beneficiaries. Together, roughly 72% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.