Dr. Sean M. Nestor (PhD, MD, FRCPC) is a clinician-investigator and interventional psychiatrist at the Harquail Centre for Neuromodulation, Hurvitz Brain Sciences Program and the Mood and Anxiety Disorders Program at Sunnybrook Health Sciences Centre, Toronto, Canada. He is also an assistant Professor in the Department of Psychiatry, Temerty Faculty of Medicine at the University of Toronto.

Dr. Nestor completed his undergraduate training in health sciences and biology and a masters in medical biophysics at the University of Western Ontario. He subsequently completed his MD and PhD concurrently through the University of Toronto MD/PhD program. His doctoral work focused on the development of automated human brain mapping methods to assess mechanisms of neurodegeneration in dementia. He subsequently completed his residency training in psychiatry at the University of Toronto where he was a member and chief resident of the Clinician Scientist Program. During his residency training, Dr. Nestor applied computational methods to explore how brain structure and function is associated with clinical response to repetitive transcranial magnetic stimulation treatment in persons with depression.