The California Emergency Medical Services Authority (EMSA or EMS Authority) is an agency of California State government. The California EMS Authority is one of the thirteen departments within the California Health and Human Services Agency. The director is required to be a physician with substantial experience in emergency medicine. Dave Duncan MD is the current Director. The mission of the California EMS Authority is to ensure quality patient care by administering an effective, statewide system of coordinated emergency medical care, injury prevention, and disaster medical response.