Gregg S. Day, MD, MSc, MSCI

Mayo Clinic, Florida
Gregg S. Day, MD, MSc, MSCI, is an associate professor, Director of the Division of Behavioral Neurology, and Vice Chair of Research within the Department of Neurology at Mayo Clinic in Florida. His research focuses on improving the clinical diagnosis, characterization and treatment of individuals with common and uncommon causes of dementia, including neurodegenerative and autoimmune-mediated causes of rapid progressive dementia. Dr. Day is a project PI of the longitudinal Bio-RaPID study, focused on deciphering patient- and disease-specific contributors to rapidly progressive Alzheimer disease and related dementias, and the ExTINGUISH Trial—the first multisite randomized controlled trial for patients with anti-NMDAR encephalitis. Bio-RaPID and ExTINGUISH are supported by the National Institutes of Health.


