Zev Williams, MD, PhD is the Wendy D. Havens Associate Professor of Women's Health and the Chief of the Division of Reproductive Endocrinology and Infertility at Columbia University Irving Medical Center. He completed his MD and PhD training in Molecular Biology and Biochemistry at the Mount Sinai School of Medicine before continuing to the Brigham and Women's Hospital/Massachusetts General Hospital for his residency in Obstetrics and Gynecology. After completing his fellowship in Reproductive Endocrinology and Infertility at Weill-Cornell, Dr. Williams then did a post-doctoral fellowship on RNA biology in the laboratory of Dr. Thomas Tuschl at Rockefeller University. As a physician scientist, Dr. Williams' focus has been on helping those suffering from recurrent pregnancy loss and infertility and developing novel technologies and treatments to improve patient success.