Dr. Zipkin knows what he's doing as a doctor but he is unfriendly, rude, and should not work with children because he is not patient and does not explain things to them when they are curious. This man is outragously overpriced. I did not know that there were better prices out there for the same results and ended up overpaying for my daughter's work. I did not make the same mistake with my son, his doctor is very friendly to him and costs significantly less