In addition to his work as a professor, he is the clinical director of the Gender Health Center, River Rock Counseling, and La Familia Counseling Center and is on the faculty of the Vancouver School for Narrative Therapy. David is an also a certified trainer for the International Center for Clinical Excellence (ICCE). David has over 25 years of clinical experience working in many contexts including community mental health, non-profit agencies, managed care settings, and private practice. He has published many articles on narrative therapy and clinical work with the LGBT population and is the author of Treating Huckleberry Finn: A New Narrative Approach with Kids Diagnosed ADHD and the co-editor (with Craig Smith) of Narrative Therapies with Children and Adolescents.