My name’s David Flack. I’m a Licensed Mental Health Counselor (LMHC), Substance Use Disorders Professional (SUDP), and Approved Clinical Supervisor — with offices in the Fremont neighborhood of Seattle and Tukwila, Washington.
Since 2002, I’ve provided therapy for teens and emerging adults with a wide variety of mental health and behavioral concerns — focusing on trauma, depression, substance related issues, problematic pornography use, and oppositional behavior. For more, go to Counseling.
In addition to my clinical work, I regularly provide well-received professional development programs — including full day trainings, three hour workshops, and shorter presentations. Topics include facilitating change, treating trauma in teens, addressing substance use, and more. For more, go to Training.
SEEKING SERVICES?
I have the following openings for weekly in-person sessions:
Fremont: Mondays 3:00pm.
Tukwila: None. I anticipate openings in 4-6 weeks.
Get Started | Wait List
UPCOMING PRESENTATION
Behavioral Addictions in Teens
Thursday, June 11, 2026 • 1:45pm to 3:15pm • Kennewick, Washington
As part of the Washington Behavioral Healthcare Conference
WBHC’s Website

