i went in because my former general dentist completely "overlooked" a loose lower front tooth and it was reccommended I visit a perio. Kao was said to be one of the two best in the valley. I later found he had a stint as head of the dental society. The guy is a perfectionist and is highly critical (I walked in on a dressing-down one time) towards employees. What Kao did worked. I think you will appreciate him. He discussed details of a potential malpractice suit against the (very) careless dentist I had had. Kao was availablel at all times during my recovery from the gum resection and graft.