Medicare Advantage in Jefferson County, Kansas
1,570 people in Jefferson County, Kansas were enrolled in Medicare Advantage in October 2026, 33.0% of 4,755 eligible beneficiaries (+0.3 pts since October 2025). UnitedHealth Group, Inc. is the largest parent organization with 33% of reported enrollment; 10 parent organizations have 11 or more members and the HHI is 2,107 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 292 members here are in plans that terminate or leave the county, and Blue Cross Blue Shield of Kansas leaves. MA plans offered go from 36 to 29.
Parent organizations in Jefferson County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| UnitedHealth Group, Inc. | 509 | −11 | 33.1% |
| Humana Inc. | 326 | +64 | 21.2% |
| CVS Health Corporation | 255 | −47 | 16.6% |
| Blue Cross Blue Shield of Kansas | 231 | +8 | 15.0% |
| Highmark Health | 115 | −7 | 7.5% |
| Devoted Health, Inc. | 39 | new | 2.5% |
| Elevance Health, Inc. | 20 | +2 | 1.3% |
| Kansas Superior Select | 19 | +2 | 1.2% |
| Centene Corporation | 13 | −11 | 0.8% |
| Midland Care Connection, Inc. | 13 | new | 0.8% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 1,217 beneficiaries in Jefferson County were assigned to 26 Medicare Shared Savings Program ACOs, 55.1% of assignable Original Medicare beneficiaries. Together, roughly 70% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.