Most dishonest dentist I have seen in my life. I was told by others to be careful and be vigilant in dealing with dr. Johnny liu. He told me I have 4 cavities and needed around $900 dollars in work. I have never had a cavity in my life . So I went to another dentist and was told my teeth are in great shape and needed nothing at all. Prior to this incident my son was told he had 5 cavities. Well, we had him treat my son though my son had no pain and was seen by another dentist only 4 months prior because of our dental insurance policy renewal . That dentist said his teeth were just fine . Find another dentist fast. Johnny liu is very dishonest.