Dr. Yu is the best Doctor I have ever seen! He takes a special interest in his patients, and is very thorough. He diagnosed my Vitamin B12 deficiency several years ago, a test that most Doctors don't test for, and because of that I will always be so grateful. I continue to commute to his office from Scottsdale when I have any concerns about my health, since no other Doctor that I've been to can compare. I highly recommend Dr. Yu to anyone looking for an extraordinary Doctor. He will do everything in his power to figure out what is wrong and make you feel better. I know I'm not alone in my feelings about Dr. Yu, since he has received countless awards.