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>>
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>>

Beth Epps, MEd

Chief Community Solutions Officer

Beth provides leadership for Cascadia’s broad array of behavioral and integrated programs for individuals with mental health and addiction challenges. Read more>>
Barry Gault, CPA

Chief Financial Officer

Barry has over 30 years of experience in a variety of financial roles, Barry spent 15 years at Xerox Corporation and joined Cascadia as Controller in 2018.  Read more>>

Eric Sevos, LCSW

Chief Operating Officer

Eric oversees Cascadia’s FQHC business operations, government affairs, contracts, and development. Read more>>

Alana Silverman, BA

Chief People Officer

Alana is Senior Director of Human Resources and works with internal stakeholders to ensure Cascadia’s mission, vision, and values are supported. Read more>>

April Sweeney, MD

Chief of Psychiatry

April Sweeney joined Cascadia as Chief of Psychiatry in 2023. After earning her MD from Rutgers New Jersey Medical School and completing psychiatry residency at Oregon Health & Science University, she served as a psychiatrist in residential, enhanced care, houseless outreach and supported housing programs at Cascadia. Read more>>

Sandra Wilborn, MS

Chief Equity, Diversity & Inclusion Officer

Sandra champions building the agency’s culture around equity, diversity, and inclusion.  She has been involved in Cascadia’s efforts to work toward a more inclusive and equitable workplace since 2007. Read more>>

Tiffany Blackmon

General Counsel

Tiffany joined Cascadia in July 2024 as the organization’s first General Counsel. Read more>>

Senior Leadership

Allison Brenner, PhD, MPH

Sr. Director of Quality and Population Health

Allison leads Cascadia’s Quality Management, Quality Improvement and Population Health Services. Read more>>

Alison Dunfee 

Sr. Director of Outreach and Mental Health

Alison is Cascadia’s Senior Director of Outreach and Mental Health Counseling. Read more>>

Neil Falk, MD

Associate Medical Director

Dr. Falk has been involved in the Multnomah County community mental health system since 1992. Read more>>

Ashleigh Flynn, BA

Sr. Director of Grants & Development

Ashleigh leads Cascadia’s grant-writing and proposals for funding. Read more>>

Donald Hice, MSW

Sr. Director of Staffed Housing

Donald oversees Cascadia’s residential, secure, enhanced care, and Adult Mental Health Initiative facilities. Read more>>

Dave Kohler, MSW

People & Culture Officer

Pari Mazhar, MSW, LCSW

Sr. Director of Equity, Diversity & Inclusion

Pari develops policies and practices to ensure that Cascadia continues to become a more inclusive and equitable workplace. Read more>>

Molly Griggs

Sr. Director of Peer Delivered Services

Kas Robinson, PhD

Sr. Director of PSRB & Emergency Services

Jackie Thomson, MSW

Sr. Director of Crisis Services

Jackie oversees all of the crisis response systems within Cascadia. Read more>>

Charles Flack

Sr. Director of Information Technology

Nancy Wu

Sr. Director of Revenue Cycle

Robert Trachtenberg

Sr. Director of Health Center Operations

Oyinda Osibanjo

Sr. Director of Integrated Health Services

Board of Directors

CASCADIA HEALTH

Steve Jaggers, MS
Chair | Counselor & Educator, retired

Derald Walker, PhD
Board President | CEO, Cascadia

Rico Bocala
Treasurer | President, Employee Benefits USI Insurance Services

Greg Townley, PhD
Vice-Chair | Associate Professor, Department of Psychology, Portland State University

Amelia J. Wilcox, PhD
Director | Assistant Professor, Lewis & Clark College, Licensed Psychologist, Lair Hill

Ben McKechnie
Director | Community Member

Dick Cowan
Director | Attorney-at-Law

Harris Matarazzo
Director | Attorney-at-Law

Lynn Jones, MA
Director | Mental health peer and advocate

Paul Giger, MD
Director | Senior Regional Medical Director, Providence St. Joseph Health

Sabrina Taylor
Director | Black Cultural Competency Librarian Assistant, Multnomah County Library

Wanda Abioto
Director | Attorney-at-Law

LaQuida “Q” Landford
Director | Executive Director, AfroVillage

Jon Eames
Ex-Officio | President, Eames Consulting

CASCADIA HOUSING, INC.

Greg Close
Board Chair | CEO, Wyse Investment Services

Amy Anderson
Board Secretary | Advocate

Charles Duit
Director | Previous Tenant

Harris Matarazzo
Director | Attorney-at-Law

Steve Jaggers, MS
Director | Counselor & Educator, retired