For 25 years, David Flack has provided counseling to teens and emerging adults with mental health challenges, histories of trauma, substance use disorders, and behavioral addictions. Located in Seattle, Washington, he is a Licensed Mental Health Counselor, Substance Use Disorders Professional, and Approved Clinical Supervisor.
In addition, David holds a Post-Master’s Certificate in Trauma-Informed Care and Counseling from the University at Buffalo, a Certificate in Traumatic Stress Studies from Bessel van der Kolk’s Trauma Research Foundation, and advanced certification in several evidence-based treatment practices.
David is considered by many to be a Subject Matter Expert on substance use among teens and emerging adults, addressing sexual trauma in adolescent males, counseling LGBTQ+ teens, and engaging treatment resistant youth. He has presented well over 100 times at international, national, and regional conferences, has published several articles, and regularly facilitates well-received professional development trainings for helping professionals.
In 2026, David was honored and humbled to receive the Outstanding Service Award during the 40th Anniversary Washington State Co-occurring Disorders Conference, for his “many years of dedication and meaningful contributions to the field.”