An associate clinical professor in psychiatry at UCLA, he supervises residents, teaches a class in guided imagery techniques, and consults in the School of Medicine. David has been a member of the teaching faculty of the S. California Society of Clinical Hypnosis, and has presented for the American Society of Clinical Hypnosis. He teaches workshops for clinicians of all levels in clinical hypnosis. A board member of the Los Angeles Society for Clinical Psychologists for many years, David also served as its president.