Leonard Kristal MD is Board Certified in Dermatology, Pediatric Dermatology and Pediatrics as well as ProHEALTH's Division Chief of Pediatric Dermatology. Dr. Kristal is currently a Clinical Assistant Professor of Dermatology at Stony Brook University. Dr. Kristal is the co author of The Color Atlas of Pediatric Dermatology and has authored many journal articles and book chapters. He also completed a Pediatric dermatology fellowship at the Children's Hospital of Philadelphia.