Medicare Advantage in Sumner County, Kansas
2,174 people in Sumner County, Kansas were enrolled in Medicare Advantage in October 2026, 38.7% of 5,622 eligible beneficiaries (+0.4 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 36% of reported enrollment; 6 parent organizations have 11 or more members and the HHI is 2,791 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 325 members here are in plans that terminate or leave the county, and Blue Cross Blue Shield of Kansas leaves. MA plans offered go from 24 to 18.
Parent organizations in Sumner County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 759 | −20 | 35.5% |
| CVS Health Corporation | 696 | +9 | 32.6% |
| Humana Inc. | 425 | +1 | 19.9% |
| Blue Cross Blue Shield of Kansas | 175 | +55 | 8.2% |
| Elevance Health, Inc. | 57 | +1 | 2.7% |
| Consolidated Assoc of Railroad Employees HC | 26 | +3 | 1.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 481 beneficiaries in Sumner County were assigned to 17 Medicare Shared Savings Program ACOs, 17.7% of assignable Original Medicare beneficiaries. Together, roughly 50% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.