Sierra J Seaman, MD

Dr. Said S. Saab is an associate professor of Obstetrics and Gynecology at Columbia University Irving Medical Center and NewYork-Presbyterian Hospital. He is a native Spanish speaker, born and raised in Havana, Cuba until 1998 when his family immigrated to the United States. After completing his undergraduate degree at Emory University, Dr. Saab attended New York University School of Medicine and later completed his residency at the Hospital of the University of Pennsylvania. He completed a master of philosophy (M.Phil.) at Trinity College, University of Cambridge, and a Master of Education (M.Ed.) in the Health Professions at Johns Hopkins School of Education, where he is an adjunct faculty member of health professions education. Dr. Saab provides general obstetric and gynecologic clinical care. His research focus is medical student and resident education, with a particular interest in assessments and evaluations.

Dr. Katherine Rosenwasser is the Chief of Pediatric Orthopedic Trauma at Columbia University Irving Medical Center (CUIMC) / Morgan Stanley Children's Hospital of New York (MSCHONY). She is an expert in the operative and non-operative treatment of lower extremity deformity and musculoskeletal trauma in pediatric patients – from infants to adolescents. Her practice focuses on caring for children with limb-length discrepancies, clubfoot, congenital deformities, and those requiring complex lower extremity reconstructive surgeries. Dr. Rosenwasser’s advanced training allows her to leverage the latest surgical techniques and non-operative therapies to provide life-altering interventions for young patients. After receiving her medical degree from Columbia University’s Vagelos College of Physicians & Surgeons, Dr. Rosenwasser remained at Columbia University Irving Medical Center and NewYork-Presbyterian where she completed residency training in orthopedic surgery, serving as executive chief resident. Following her residency, Dr. Rosenwasser completed dual fellowships in pediatric orthopedic surgery at the Hospital for Sick Children in Toronto, and pediatric limb lengthening and reconstruction under the direction of Dr. John Herzenberg at the Sinai Hospital’s Ruben Institute for Advanced Orthopedics in Baltimore, Maryland. Dr. Rosenwasser is an active member of the academic orthopedic community, both as a member of numerous national organizations and as an active researcher with a variety of ongoing research projects focused on improving patient outcomes for children who require complex orthopedic care.

Dr. Esther S. Han, MD, MPH is a board-certified OBGYN and fellowship trained Minimally Invasive Gynecologic Surgeon at New York Presbyterian – Columbia University Irving Medical Center. Dr. Han completed her undergraduate studies at Duke University and earned a master’s degree in public health at The George Washington University before earning her medical degree from Boston University. Following her residency in Obstetrics and Gynecology at Johns Hopkins University in Baltimore, MD, she completed an AAGL-accredited fellowship in Minimally Invasive Gynecologic Surgery at New York Presbyterian – Columbia University Medical Center in New York City. Dr. Han is active in the AAGL where she serves on the FMIGS Global Health Committee. She is also a member of the American College of Surgeons, the Society of Gynecologic Surgeons, the American College of Obstetricians and Gynecologists. She is passionate about improving access to minimally invasive gynecologic surgery both at home and abroad. She provides training in laparoscopy and hysteroscopy in Guatemala and Tanzania and partners with national and international organizations focusing on sustainable capacity building in low resource settings. She participates actively in the training of fellows and residents as a faculty member and educator. Dr. Han provides advanced medical and surgical care for women with complex gynecologic conditions, including fibroids, endometriosis, pelvic pain, and abnormal uterine bleeding. She specializes in minimally invasive surgical approaches including laparoscopic, robotic, and hysteroscopic techniques and is one of the few surgeons trained to perform minimally invasive transabdominal cerclage.