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Professional Facts:
- President: Westchester Surgical Society
- Past President: Westchester County Medical Society
- Author: Color Atlas of Pediatric Surgery
- Past Memberships:
· Editorial Board, Journal of Pediatric Surgery
· Editorial Board, Journal of Medicinal Food
- Advisor: Journal of Bariatric Surgery and Patient Care
- Adjunct Assistant Professor: Iona College
- Physician Member Westchester County Board of Health
- Hospital staffs:
· Columbia Presbyterian/Lawrence Hospital
· Greenwich Hospital/Yale New Haven affiliate
· White Plains Medical Center


Peter S. Liebert, M.D., MBA is a board-certified pediatric surgeon with a practice in Westchester County, NY and Greenwich, CT. He regularly evaluates infants, children, and adolescents with potential problems in general surgery and operates on those requiring surgical correction. General pediatric surgical problems include hernias (inguinal, umbilical, epigastric, and femoral), intestinal problems, pyloric stenosis, simple and complicated cysts (pilonidal and thyroglossal), undescended testis, newborn congenital abnormalities, tumors, and head and neck problems. Dr. Liebert is an expert in chest deformities in children and has pioneered in the performance of the Nuss minimally-invasive correction of pectus excavatum.

He trained in general surgery at the Peter Bent Brigham Hospital in Boston and the Children’s Hospital of Philadelphia in Pediatric Surgery. In the past he has served as Chief of Pediatric Surgery at Stamford Hospital. He is past President of the Westchester County Medical Society and currently serves as Chairman of the Finance Committee. He is also past president of the Westchester Surgical Society. A physician member of the Westchester County Board of Health, he is Chairman of its Nominating Committee. He is the sole author of a standard textbook, “The Color Atlas of Pediatric Surgery” and was a member of the editorial board of the Journal of Pediatric Surgery for 20 years.

Dr. Liebert is a graduate of Princeton University (A.B. Cum Laude) and the Harvard Medical School (M,D,). He has recently achieved an MBA, with Honors, in Finance and Health Care Management, from Iona College; he has been appointed an Adjunct Assitant Professor of Management at Iona and participates in the teaching of a graduate course in Population Health.


- Princeton University, A.B.
- Harvard Medical School, M.D.
- Fellowship in Pediatric Surgery, Children's Hospital of Philadelphia and the University of Pennsylvania.