Executive Team

Derald R. Walker, PhD

President & Chief Executive Officer

Since April 2008, Derald has been the President and Chief Executive Officer of Cascadia, for which he was recognized in April 2011 by the National Council for Community Behavioral HealthCare as a “Visionary Leader.” Read more>>
James Donnelly, RA, CPHC

Chief of Housing

James joined Cascadia in January 2023 to help support the goals of improving the housing stock around the Portland metro area and integrating supportive services for the residents. Read more>>

Bukhosi Dube, MD

Chief Medical Officer

Dr. Dube is an internist, hospitalist, and primary care physician. Dr. Dube leads Cascadia’s integrated health care services, which span mental health, addiction, and primary care. Read more>>