Dr. Chang is board certified in both General Pediatrics and Neonatal-Perinatal Medicine.  He graduated from the University of Pennsylvania and completed medical school at Thomas Jefferson University's Sidney Kimmel Medical College in Philadelphia, PA.  After medical school, he pursued General Pediatrics residency training at New York University Medical Center and went on to Neonatal-Perinatal Fellowship training at St. Christopher's Hospital for Children. Additionally, Dr. Chang holds an MBA from the Wharton School of the University of Pennsylvania where he studied Healthcare, Strategy, Innovation and Entrepreneurship.

Dr. Chang has served as Secretary of the Philadelphia Perinatal Society and was a recipient of the Thomas Boggs Award for Perinatal Research.  Finally, he is a recipient of the Partners in Excellence Award from Abington Hospital as well as the Innovator's Circle Grant for research.   Named a Philadelphia Top Doctor since 2017, Dr. Chang is currently the Chief of Neonatology at Abington Hospital-Jefferson Health.

Dr. Chang's interests include family-centered newborn care, newborn brain injury prevention, pulmonary hypertension, newborn critical care, and optimizing healthcare quality and value.

Dr. Ziegler is board certified in both Pediatrics and Neonatal-Perinatal Medicine.  Dr. Ziegler was born and raised in Montgomery County, PA.  She is a graduate of Pennsylvania State University where she was a Division I athlete.  She then went on to complete medical school at the Philadelphia College of Osteopathic Medicine.  Dr. Ziegler received both her General Pediatric and Neonatology training at Thomas Jefferson University and AI Dupont Hospital for Children.  Moreover, she was a finalist for the Thomas Boggs Award for Perinatal Research. 

In addition to being an Attending Neonatologist, she is currently the Co-Director of the Neonatal Therapeutic Hypothermia Program for Neonatal Encephalopathy at Abington.  Dr. Ziegler's other interests include patient safety and quality improvement specifically in the area of neonatal abstinence syndrome.

Dr. Poterjoy is board certified in both Pediatrics and Neonatal-Perinatal Medicine.  He is a graduate of King's College and completed medical school at Philadelphia College of Osteopathic Medicine.  He completed his medical internship at Geisenger Medical Center in Danville, PA and went on to complete his Pediatrics Residency and Neonatology Fellowship training at St. Christopher's Hospital for Children.  Prior to joining the staff of Abington, Dr. Poterjoy was an Attending Neonatologist at St. Christopher's Hospital for Children and Einstein Medical Center-Montgomery.  Dr. Poterjoy has been on staff at Abington since 2011

Dr. Cleary is board certified in both Pediatrics and Neonatal-Perinatal Medicine.  He is a graduate of LaSalle University as well as Philadelphia College of Osteopathic Medicine.  He completed both his General Pediatrics and Neonatology training at Thomas Jefferson University Hospital and the AI Dupont Hospital for Children.  Dr. Cleary is the immediate past Chief of Neonatology, and is currently the Chief of Staff, Chief Medical Officer, and Senior Vice President of Abington Hospital-Jefferson Health.

He graduated from the Patient Safety Officer Executive Development Program at the Institute for Healthcare Improvement in 2009, and completed a Certificate in Pediatric Bioethics at the Children's Mercy Medical Center in Kansas City, MO in 2014.  Currently, Dr. Cleary is a candidate for the Masters of Healthcare Management at the Harvard University T.H. Chan School of Public Health (anticipated in 2018).  A recipient of multiple teaching and clinical awards, Dr. Cleary's interests are neonatal ethics, risk reduction, and high reliability science.

Dr. Snyder is a graduate of Temple University and Philadelphia College of Osteopathic Medicine.  He completed his Pediatrics training at PCOM and neonatal fellowship training at St. Christopher's Hospital for Children in Philadelphia.  Prior to joining the staff at Abington, Dr. Snyder served as Chairman of Pediatrics at PCOM.  Dr. Snyder has had extensive experience in Neonatology which includes serving as Medical Director for Neonatology at Doylestown Hospital until 2007.  He currently is a representative on the US Breastfeeding Committee, and has received an Innovator's Circle Grant for research.

Dr. Snyder has a special interest in medical informatics and currently is Director of Neonatal Health Information Technology at Abington Memorial Hospital.