Dr. Sax was born in Cleveland, Ohio. Her undergraduate education was at Harvard College, where she graduated magna cum laude, in 1983. She received an M.D. from Harvard Medical School in 1987. Her internship and residency in pediatrics were performed at Children's Hospital in Boston. Following residency, Dr. Sax had further subspecialty training in adolescent medicine through the Department of Adolescent Medicine at Children's Hospital. With her training in Adolescent Medicine, Dr. Sax hopes to provide excellent care to patients from infancy through their college years. She is board certified in pediatrics and a Fellow of The American Academy of Pediatrics, as well as a member of the Massachusetts Medical Society and The American Medical Association.

Dr. Sax joined the staff of Hyde Park Pediatrics in 1990. Her husband Paul is the Clinical Director of Infectious Disease at Brigham and Women’s Hospital. She has two wonderful teen-aged children.   In  2011 she was presented with the "Award of Service to Pediatrics and the Community," the highest award granted to a community pediatrician from the Children's Hospital of Boston.   She is a member of the Child Wellness Council for the City of Boston.

Personal Statement
As a pediatrician, I believe that it is a privilege to be able to care for children, watching them grow from infancy to adulthood. I love being a part children’s lives at each stage of their development. I try to bring insights from my own parenting experiences to my pediatric practice. Life at home has provided much practical experience on parenting issues like sibling rivalry, discipline, limiting exposure to harmful messages in popular culture, and maintaining a nutritionally healthy household. My own children, teenagers, are growing up so quickly. I love to come to Hyde Park Pediatrics to experience infancy, toddlerhood, and early childhood again through the lives of my patients and their families .