Medicare Advantage in Chelan County, Washington
8,130 people in Chelan County, Washington were enrolled in Medicare Advantage in October 2026, 39.8% of 20,448 eligible beneficiaries (+0.7 pts since October 2025). Centene Corporation is the largest parent organization with 52% of reported enrollment; 8 parent organizations have 11 or more members and the HHI is 3,546 (highly concentrated). HRSA classifies the county as partly rural. For 2027, 4,400 members here are in plans that terminate or leave the county, and Elevance Health, Inc. leaves. MA plans offered go from 12 to 8.
Parent organizations in Chelan County
| Parent organization | Members | Change since October 2025 | Share |
|---|---|---|---|
| Centene Corporation | 4,212 | −158 | 52.1% |
| Humana Inc. | 2,149 | +533 | 26.6% |
| UnitedHealth Group, Inc. | 654 | +126 | 8.1% |
| Molina Healthcare, Inc. | 452 | +26 | 5.6% |
| Community Health Plan of Washington | 331 | −270 | 4.1% |
| CVS Health Corporation | 239 | +23 | 3.0% |
| Elevance Health, Inc. | 28 | +12 | 0.3% |
| Cambia Health Solutions, Inc. | 17 | +2 | 0.2% |
CMS suppresses county and contract counts of 10 or fewer; shares are of reported enrollment.
Value-based care alongside MA
In PY 2024, 6,827 beneficiaries in Chelan County were assigned to 53 Medicare Shared Savings Program ACOs, 71.2% of assignable Original Medicare beneficiaries. Together, roughly 83% of all Medicare beneficiaries in the county are in Medicare Advantage or an MSSP ACO. See the ACOs in the MSSP Explorer.