	Benowitz joined the faculty of UCSF in 1973 as a clinical instructor. He was appointed an assistant professor there the following year, and became an associate professor in 1981. Since 1987, he has been a professor of medicine, psychiatry and biopharmaceutical sciences at UCSF. Since 1983, he has also been the chief of UCSF's Clinical Pharmacology and Experimental Therapeutics division.