Mary E. D'Alton, MD

Maternal-Fetal Medicine
Obstetrics and Gynecology (Board Certified)
Obstetrics, High Risk (Board Certified)
Office Phone: (212) 326-8951
One of America's Top Doctors
Rated one of New York Magazine's Best Doctors


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.

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

Area of Expertise

Aetna [HMO, Medicare, NY Signature, POS, PPO, Signature Administrators, Student Health]

Affinity [Essential (Exchange), Medicaid, Medicare]

CIGNA [Great West, HMO, POS, PPO]

Empire Blue Cross Blue Shield [Blue Priority, Child Health Plus, EPO, HMO, Medicare (Mediblue), Pathway (Exchange), POS, PPO]

Fidelis Care [Child/Family Health Plus, Medicaid, Medicare]


Health First [Child/Family Health Plus, Medicaid, Medicare]

Health Insurance Plan of NY (HIP) [ConnectiCare, EPO, HMO, Medicaid, Medicare, PPO, Select Care (Exchange), Vytra]

Health Plus - Amerigroup [Medicaid]

Local 1199



Medicare [Medicare]


Oscar (Exchange)

Oxford Health Plans [Freedom, Liberty, Medicare]


UnitedHealthcare [Compass (Exchange), HMO, Medicare, POS, PPO, The Empire Plan (NYSHIP)]

VNSNY CHOICE [Select Health]


National University of Ireland, Faculty of Medicine (Ireland)

Internship: University College, Galway (Ireland)

Residency: Ottawa General Hospital

Fellowship: Tufts University Hospital

Fellowship: Yale New Haven Hospital


ColumbiaDoctors Midtown

51 West 51st Street
Room 320
New York, NY 10019

Phone: (212) 326-8951

Fax: (212) 305-5610

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Willard C. Rappleye Professor of Obstetrics and Gynecology