Dr. Tu speaks both Chinese and Enlish. The facilites are very new. Now sure how good is her skills because I only did the regular cleaning in her clinic. My teeth need deep cleaning but she wouldnt waive the co-pay for me although my insurance will pay 80% of the charge. Then I went to another dentle office for the deep cleaning. I gave her 4* on Customer Service because she always teaches me something everytime I visit.