Marwan Sabbagh, M.D., a geriatric neurologist and leading expert in Alzheimer's research, founded the Sun Health Research Institute's Cleo Roberts Center for Clinical Research. He is a leading investigator for several prominent national Alzheimer's prevention and treatment trials, including the Alzheimer vaccine studies. He has authored or coauthored more than seventy medical and scientific articles on Alzheimer's research. Dr. Sabbagh is also a staff physician at Boswell Memorial Hospital, where he specializes in the diagnosis and treatment of Alzheimer's. He is an adjunct professor at Midwestern University and Arizona State University.