Sergievsky Center, the Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, and in the Department of Neurology, Division of Aging and Dementia. He is the Director of the Clinical Core of the Alzheimer’s Disease Research Center at Columbia University. He is also an Associate Attending in Neurology at New York Presbyterian Hospital and holds appointments at the New York State Psychiatric Institute, and Isabella Geriatric Center.