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Education & Training

  • Fellowship Program, Neonatal-Perinatal Medicine, 2007
    Children's National Medical Center
  • Residency Program, Pediatrics, 2004
    Children's National Medical Center
  • Internship Program, Pediatrics, 2002
    Children's National Medical Center
  • MD, 2001
    Weill Cornell Medical College - Cornell University
  • BA, 1997
    George Washington University

Board Certifications

  • American Board of Pediatrics
  • American Board of Pediatrics/Neonatal-Perinatal

Awards & Recognition

  • Top Doctors No Va Magazine (2020)

National Provider ID: 1548398027


An Massaro, M.D., is a Professor of Pediatrics at The George Washington University School of Medicine and a neonatologist at Children’s National Hospital. She is a Principal Investigator in the Center for Translational Science and the Center for Neuroscience in the Children’s Research Institute at Children's National. Her research broadly centers on neonatal neurology and neuroprotection. More specifically, she investigates neuroimaging, biochemical and physiological biomarkers of brain injury for the assessment and treatment of perinatal brain injury in high-risk newborns. Dr. Massaro works part-time at Children’s National and also works at the Office of Pediatric Therapeutics at the Food and Drug Administration. Dr. Massaro’s involvement at Children’s National is based on her professional expertise and is not an official representation of the U.S. Government, the Department of Health and Human Services, or the Food and Drug Administration.

Research & Publications

A Report on Early Neurodevelopmental Outcomes in Extremely Low birth Weight Infants Managed with Early Nasal Continuous Positive Airway Pressure

(2004) Journal of Pediatric Neurology

Brain Monitoring in the Neonatal Intensive Care Unit

(2008) Hot Topics in Neonatal Neurology

Fetal Brain Development The Role of Maternal Nutrition Exposures and Behaviors

(2006) Journal of Pediatric Neurology

Pediatric Academic Societies Annual Meeting

(2009) NICU network neurobehavioral scale (NNNS) and amplitude integrated electroencephalogram (aEEG) prior to discharge can help predict outcome in very low birth weight (VLBW) infants.

Pediatric Academic Societies Annual Meeting

(2009) Quantitative analysis of MR images is predictive of adverse neurological outcome in encephalopathic neonates treated with whole body hypothermia.