Dr. Leong has been in the area for a very long time. He is very genuine and sincere in his service to his patients. He has treated my children and I am very very happy with his care for my children. He always has anwsering machine on with his number or his associate number for emergency. He has been very patient with my children. He has excellent staff that takes care of our needs and I'm very happy with his office and his staff. He is now renovating and his office is starting to look so beautiful...the most beautiful office in silicon valley.