ProHealth pediatric in Lake Success, very close to Great Neck. I've been using them for over 7 years now for both of my children. Dr. Lange and Dr. Escobar are both very nice. Dr. Yan is a Taiwanese but does not speak manderin. The good thing about this practice is that they are a large group with each doctor specializing in a specific area (and all of them are general pediatrician also). They also have same day sick appoitment so you don't need to wait for next day when you feel your child is sick