My family has been seeing Dr Liu for about 3 years. Overall we like his services.I had one teeth fill in two years ago. So far, I feel pretty comfortable. I didn't feel any pain during the procedures. He also charges reasonable price. My insurance is Delta Dental. It works well. The staff there are all very nice people. My husband did a root canal and crown in his place too. But the crown is broken for the first time when he was eating something firm. Then he went back to his office again to have it removed and changed. We are not so happy with that. My husband was a little bit angry for that. But overall, we like his services and his staff. They are very professional and nice.