Mary E. D’Alton, MD

Chair, Department of Obstetrics & Gynecology
Maternal-Fetal Medicine

Willard C. Rappleye Professor of Obstetrics & Gynecology
Director of Services, Sloane Hospital for Women

To schedule an appointment: (212) 326-8951
To schedule an ultrasound: (212) 305-4636

Practice Location(s)

Columbia Ob/Gyn Midtown

51 West 51st St, 3rd FL

(between 5th and 6th Ave)

New York, NY 10019


Dr. D'Alton specializes in high-risk Maternal Fetal Medicine, performing prenatal diagnostic procedures and managing maternal health complications. She has implemented a multidisciplinary approach to treat highest risk pregnancies and to diagnose and treat fetal complications. She was instrumental setting up Columbia University Medical Center’s Carmen and John Thain Center for Prenatal Pediatrics, a regional coordinated care center to treat fetal complications, which opened in 2010. Dr. D’Alton has promoted quality monitoring and training in new technologies to support clinical applications.

Her work to advance research, policy development and clinical practice has won national recognition. Honored with a Lifetime Achievement Award in 2006 by the Society for Maternal Fetal Medicine (SMFM), Dr. D’Alton has served as its president and has held key positions in other professional organizations, including the American College of Obstetricians and Gynecologists’ (ACOG) Neonatal Encephalopathy and Cerebral Palsy Task Force and American Gynecological and Obstetrical Society. She has a long association with the National Institutes of Health and the National Institute of Child Health and Development, participating on review panels and committees, and conducting ongoing research.

Dr. D’Alton has written and contributed to more than 175 publications. She co-authored Fetology, awarded the 2001 Association of American Publishers Award for Best Textbook in Clinical Medicine. She is co-editor of Seminars in Perinatology and has served on the Editorial Board of the ACOG’s Obstetrics and Gynecology.


Board Certified: Obstetrics & Gyneocology, Maternal Fetal Medicine
Medical School: Medical School: National University of Ireland Galway, Ireland
Residency Training: Resident, Anesthesiology University of Ottawa Ontario, Canada Resident, Obstetrics & Gynecology University of Ottawa Ontario, Canada
Fellowship Training: Tufts University School of Medicine Maternal-Fetal Medicine Boston, Massachusetts Yale University School of Medicine, Post Doctoral Fellow, Perinatal Unit New Haven, Connecticut