Dear Dr. Christina
PM Pediatrics

Medical Leadership

Nikhil B. Shah, MD

Merissa Rzonca, MD

Dr. Merissa Rzonca is the Medical Director and Lab Director at PM Pediatrics of Commack, where she oversees all medical operations for the practice. Before assuming the role of Medical Director, she was Assistant Medical Director of the practice. Prior to joining PM Pediatrics, Dr. Rzonca was an associate working in private practice, as well as a pediatric hospitalist at Good Samaritan Hospital. She is board certified in Pediatrics, and is a certified instructor for the American Heart Association, teaching Pediatric Advanced Life Support and Basic Life Support. Dr. Rzonca completed her Pediatric residency at Cohen Children’s Hospital, where she participated in the CHAMPS program for better management of suspected child abuse in the medical setting. Dr. Rzonca received her medical degree from SUNY Downstate Medical Center and completed her undergraduate degree at Boston College.