About Sonia Lewin, MD


Dr. Sonia Lewin is an attending physician in the Department of Emergency Medicine at Massachusetts General Hospital. She graduated from the University of Massachusetts Medical School. After completing her internship and residency in pediatrics at MGH, she completed a fellowship in pediatric emergency medicine. Dr. Lewin is assistant professor of pediatrics at Harvard Medical School.

Dr. Lewin's major academic commitment is to teaching, both in the clinical arena and through didactic lectures, with teaching settings ranging from patients' bedsides, to interactive skill-stations, core curricula lectures, and presentations at HMS/CME courses, American Academy of Pediatrics conventions and national grand rounds. She has also written chapters in two editions of Ambulatory Pediatric Care. Dr. Lewin served as Co-Director of MGH Department of Pediatrics annual HMS/CME course; "Emergencies and Procedures in Pediatrics." She also teaches minor surgical workshops and "Everything You Always Wanted to Know about Pediatrics but Dared Not Ask," a talk she created to prepare moonlighters, not primarily trained in pediatrics, to care for children presenting with emergency conditions. She also was instrumental in establishing Child-Life Services in the MGH ED. Dr. Lewin's area of expertise is the febrile infant and child. She teaches the age-based work-up of pediatric patients with fever.

Clinical Interests:




Mass General for Children: Pediatric Emergency Medicine
55 Fruit St.
Boston, MA 02114
Phone: 617-724-4110

Medical Education

  • MD, Univ. Mass. Worc. M.S.
  • Residency, Massachusetts General Hospital*
  • Fellowship, Massachusetts General Hospital*

Accepted Insurance Plans

Note: This provider may accept more insurance plans than shown; please call the practice to find out if your plan is accepted.


Dr. Lewin's main interest is in the febrile infant.  She developed the Algorithm for the Evaluation of the Well-Appearing Febrile Child: An age-based chart detailing the differences in the evaluation and management of the febrile neonate (<29 days old) compared with the young infant (29 to 89 days old) and the 3-month to 2-year-old pediatric patient; Revision over the years reflects the availability of new vaccines and changes in the epidemiology of pathogens.

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