I have had my braces put on by Dr. Daniel Cheng for over 3 years ago. I went to have consultation at two other well known orthodontists before seeing Dr. Cheng. Both of them turned me down and said it was impossible to correct my underbite without surgery. However, that was not the case with Dr. Daniel Cheng as he has since made it possible. His assistants are very patient, knowledgeable and friendly . 5/5!