• Our Physicians

• Megan Dinh, M.D.
• Joseph Dorfman, MD
• William Giasi, M.D.
• Leslie Greenberg, MD
• Robert Helmrich, MD
• Payal Hemrajani, MD
• Valerie Kullmann, MD
• Bert Mandelbaum, MD
• Rebecca Marshall, MD
• Joelle McConlogue, MD
• Kim Millar, MD
• Adam Naddelman, MD
• Peter Pellegrino, MD
• Dean Pierson, MD
• Shawn Pierson, MD
• Gerald Raymond, MD
• Kathleen Riewe, MD
• Allen Schneider, MD
• Priya Stephen, MD

Our Physicians

Peter Pellegrino, M.D.

Dr. Pellegrino joined PNP in 2010. He has been an attending pediatrician at Vance Air Force Base in Oklahoma since 2007. Dr. Pellegrino completed his residency in pediatrics and adolescent medicine at Stanford University in California and the David Grant Medical Center, Travis Air Force Base in California. He received his medical degree at Jefferson Medical College in Philadelphia, PA. Dr. Pellegrino attended Duke University in Durham, NC and graduated with a B.S. with Distinction with a degree in biological anthropology and anatomy. He is board certified in pediatrics and is a fellow of the American Academy of Pediatrics. Dr. Pellegrino enjoys woodworking, music (especially the Rolling Stones) and flyfishing. He is an avid Yankees, Giants, and Duke Blue Devil fan. Dr. Pellegrino lives in West Windsor with his wife and daughter.

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Dean Pierson, M.D.

Dr. Pierson is one of the founding members of PNP and has been in practice in Princeton since 1972. He completed his pediatric residency from Massachusetts General Hospital in Boston, Mass. Dr. Pierson received his medical degree from Tufts University in Boston, Mass. He obtained an undergraduate degree from Princeton University. Dr. Pierson is board certified in pediatrics and is a fellow of the American Academy of Pediatrics. He thoroughly enjoys fly-fishing, golfing, and skiing. Dr. Pierson lives in Hopewell with his wife and is very proud of his four grandchildren.

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Shawn Pierson, MD

Dr. Pierson joined PNP in 2004. He previously worked as a pediatric attending physician at Kennedy Memorial Hospital. Dr. Pierson completed his pediatric residency from Children's National Medical Center in Washington, D.C. He received his medical degree from Jefferson Medical College in Philadelphia. Dr. Pierson attended Princeton University and obtained a BA undergraduate degree in molecular biology. He is board certified in pediatrics and is a fellow of the American Academy of Pediatrics. Dr. Pierson grew up in West Windsor and is a graduate of West Windsor-Plainsboro High School. He enjoys golf, skiing, and watching English Premier League Soccer. Dr. Pierson lives in Hillsborough with his wife, three children, and dog.

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