Dr. Katz served as the director of the World Trade Center Worker/Volunteer Mental Health Monitoring and Treatment Program, which meets the mental health needs of people who worked or volunteered at Ground Zero after 9/11 from 2002 through July 2006, and now is the Supervising Psychiatrist within that program. He also serves as the Director of the Fellowship in Global Mental Health at Mount Sinai. Dr. Katz has previously served as the Director of Psychiatry Emergency Services and then Director of Acute Care Psychiatry Services at Mount Sinai. Dr. Katz received separate teaching awards from medical students and residents in 2001 and was nominated as a faculty member of the Mount Sinai chapter of the AOA medical honor society in 2003.