my doc referred him to me too. i think he only do root canal. yes, he's very famous and professional, but very costly. i tried to search for another dentist to do my root canal since i know dr leung is very expensive. but that dentist recommend me to see dr leung instead. she told me dr leung is specialist and he taught in university too. it costed me $8500 mouth: if your case is complicated, i recommend you to c dr leung. it will save you from doing it again if it fails.