Dr. Campbell is a Clinical Specialty Consultant with the Substance Abuse and Mental Health Services Administration, Center for Substance Abuse Treatment in the Division of Pharmacologic Therapies (SAMHSA/CSAT/DPT) and serves as a Commander in the United States Public Health Service. In his role at SAMHSA, he is responsible for planning, directing, and evaluating the development of pharmacotherapy-based treatment standards and guidelines that require specialized DPT medical review. In addition he is an adjunct professor at both Howard University College of Pharmacy and College of Medicine in Washington DC. Dr. Campbell earned two bachelor's degrees from Howard University; Chemistry (1985) and Pharmacy (1988). He earned his Doctorate of Osteopathic Medicine from Ohio University (1994). Additional training followed, including a residency in Internal Medicine, with Board certification and specific training in Clinical Pharmacology.