Medicare Advantage in Atchison County, Kansas
1,135 people in Atchison County, Kansas were enrolled in Medicare Advantage in October 2026, 33.3% of 3,408 eligible beneficiaries (−0.1 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 59% of reported enrollment; 7 parent organizations have 11 or more members and the HHI is 4,291 (highly concentrated). HRSA classifies the county as fully rural. For 2027, 85 members here are in plans that terminate or leave the county. MA plans offered go from 23 to 19.
Parent organizations in Atchison County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 658 | +26 | 59.1% |
| Humana Inc. | 298 | +121 | 26.8% |
| CVS Health Corporation | 93 | −163 | 8.4% |
| Devoted Health, Inc. | 22 | new | 2.0% |
| Elevance Health, Inc. | 18 | 0 | 1.6% |
| Highmark Health | 12 | +1 | 1.1% |
| Kansas Superior Select | 12 | −1 | 1.1% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 157 beneficiaries in Atchison County were assigned to 16 Medicare Shared Savings Program ACOs, 8.2% of assignable Original Medicare beneficiaries. Together, roughly 39% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.