David Bearman received his M.D. from the University of Washington School of Medicine. He has served at all levels of government including the U.S. Public Health Service, Director of Health Services at San Diego State University, Health Officer and Director Sutter County Health Department and Medical Director/Director of Medical Services for the Santa Barbara Regional Health Authority (now CenCal). Dr. Bearman has a long career in the field of drug abuse treatment and prevention. He was prominent in the community clinic movement, having started the third Free Clinic in the country in Seattle, then directing the Haight Ashbury Drug Treatment Program, and founded the Isla Vista Medical Clinic. He was Medical Director of Santa Barbara County Methadone Maintenance Clinic, Ventura County Opiate Detox Program, and Zona Seca, an outpatient drug treatment program. He is a leader in the field of cannabinoid medicine, a co-founder of the American Academy of Cannabinoid Medicine, on the board of Americans for Safe Access and the Advisory Board for Patients Out of Time. The Wall Street Journal Health Blog named him "Doctor of the Day." He has taught courses on the physiology and history of substance use and abuse at UCSF, UCSB, and SDSU, been a consultant to Hoffman LaRoche, NIDA and the National PTA, made numerous professional presentations, consulted widely and has been an expert witness in over 400 civil, criminal, and family court cases. Currently he is Zona Seca's Medical Consultant and maintains a private practice.