Dr. Sonia Lewin is an attending physician in the Department Emergency Medicine at Massachusetts General Hospital. She graduated from the University of Massachusetts Medical School. After completing her internship and residency in pediatrics 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 is 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 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.