Dr. Greenblatt is a physician-scientist who leads a research laboratory at Weill Cornell Medical College that focuses on identifying new stem cells in the skeleton and understanding how these stem cells impact skeletal health. After completing an MS/BS program at Yale University, he then performed MD and PhD studies at Harvard University, completing his PhD in the laboratory of Dr. Laurie Glimcher. After completing residency in pathology at Brigham and Women's Hospital, he started his laboratory at Weill Cornell Medical College in New York City in 2015. Highlights of the lab's work include discovery of a stem cell on the outer surface of bones, 2 new stem cells forming the skull, and a stem cell in the vertebrae that contributes to the high rates of breast cancer metastasis to the spine over other skeletal sites. In addition to research, he serves as a pathologist at New York Presbyterian Hospital.