Dr. Greenberg, Professor of Neurology at Harvard Medical School, holds the John J. Conway Endowed Chair in Neurology, directs the Hemorrhagic Stroke Research Program, and is Vice-Chair for Faculty Development and Promotions at the Massachusetts General Hospital.  Initiated in 1994, the Hemorrhagic Stroke Research Program has become internationally recognized as a leading authority on the causes, diagnosis, and treatment of cerebral amyloid angiopathy.  Dr. Greenberg has authored over 280 research articles and 80 chapters, reviews, and editorials in the areas of hemorrhagic stroke and small vessel brain disease. He has served in many national and international leadership roles in the fields of stroke and neurology including principle investigator for the NINDS MarkVCID biomarkers consortium coordinating center, President of the International CAA Association, chair of the NIH Acute Neurologic Injury and Epilepsy study section, co-chair of the NINDS Alzheimer’s Disease-Related Dementias Summit subcommittee on vascular cognitive impairment, and chair of the American Heart Association International Stroke Conference.

Dr. Greenberg received his undergraduate degree in Biochemistry from Harvard University and MD and PhD degrees from Columbia University under the graduate research training of Dr. James Schwartz.  He performed internship at Pennsylvania Hospital, neurology residency at Massachusetts General Hospital, and post-doctoral fellowship at the Brigham and Women's Hospital Center for Neurologic Diseases before joining the Massachusetts General Hospital faculty.