Robert Orenstein, DO, FIDSA, FACP, AAHIVS

Dr. Robert Orenstein joined the University of Arizona College of Medicine – Tucson faculty in July 2026 after serving as chief of the Division of Infectious Diseases at the Mayo Clinic Arizona since 2012. He was also a professor of medicine and a senior fellow in the Academy of Educational Excellence at The Mayo Clinic College of Medicine and Science. He served as editor in chief of the Journal of the American Osteopathic Association (JAOA) from 2013-2020. Among the many awards he’s received for his educational efforts are the 2019 American Academy of Osteopathy’s Academy Award, its highest service award for a non-member, and the 2021 Mayo Above and Beyond Clinician Award.

Seeing complex inpatient and outpatient consultations in general as well as handling transplant infectious diseases treatment, Dr. Orenstein was the founder of the Mayo Clinic Microbial Restoration Therapeutics Program and its C. difficile treatment program. He played a leadership role in organizing Mayo’s response to both the COVID-19 and Monkeypox public health emergencies. He also has led a CDC/Arizona Department of Health Services-sponsored Emerging Therapeutics Consortium focused on health equity and improving education on emerging infections across the state.