William Hersh, MD, FACP, FACMI, FAMIA, FIAHSI is a Professor in the Department of Medical Informatics & Clinical Epidemiology (DMICE) in the School of Medicine at Oregon Health & Science University (OHSU) in Portland, Oregon, USA. Dr. Hersh served as the inaugural Chair of DMICE from 2003-2022 and as Head of its predecessor free-standing Division of Medical Informatics & Outcomes Research from 1997-2003. He is a leader and innovator in biomedical informatics both in education and research.

He serves as Director of OHSU's Biomedical Informatics Graduate Program, which includes two master's degrees (research and professional), a PhD degree, and Graduate Certificate, and has nearly 1000 alumni. Dr. Hersh also conceptualized and implemented the first offering of the American Medical Informatics Association (AMIA) 10x10 ("ten by ten") program, which has been completed by more than 3000 individuals since 2005. He also serves as Editor of the textbook, Health Informatics: Practical Guide, Eighth Edition (Lulu.com, 2020), which is available in print and eBook format and has an associated Web site.