Prior to joining the University Arizona, Dr. Thienhaus was with the Unversity of Nevada. He previously served as chief clinical officer of University Hospital Cincinnati with the University of Cincinnati, associate professor of psychiatry and emergency medicine and vice chair of the Department of Psychiatry at the University of Cincinnati College of Medicine, and director of the Psychiatric Emergency Service at the University of Cincinnati Medical Center. He also was a psychiatric consultant to the Cincinnati V.A. Medical Center. He has been a visiting professor at Phramongkutklao College of Medicine, Bangkok, and the University of Chang Mai School of Medicine, Chang Mai, Thailand; and the University of Kyrgyzstan College of Medicine in Bishkek.
Dr. Thienhaus serves as a senior examiner for specialty board examinations and as a member of the Maintenance of Certification Committee of the American Board of Psychiatry and Neurology. He also is a consultant to the Center for Medicare and Medicaid Services of the Hospital Accreditation Program in the U.S. Department of Health and Human Services. He is an ad hoc study section reviewer for the National Institutes of Health (epidemiology) and the National Institute of Mental Health (geriatrics).
Dr. Thienhaus is the author or editor of several books, including Correctional Psychiatry, Volumes I and II, Manual of Hospital Psychiatry and, in a different vein altogether, Jewish-Christian Dialogue - The Example of Gilbert Crispin. His scientific journal articles have appeared in many publications, including the Journal of Clinical Psychiatry, American Family Physician, American Journal of Psychiatry, Psychiatric Services, Journal of Psychoactive Drugs, Harvard Mental Health Letter and Psychiatric Times. He serves on the editorial boards of the International Journal of Offender Therapy and Comparative Criminology and the Annals of Pharmacotherapy.