I would like to start out by saying that I feel Dr. Yu is a very competent doctor and I trust him with any advice he gave about my daughter. He was very friendly when I met him... he always got me in when I needed to see him. However, when my baby was about 2 months old. I got an eye infection and I called Dr. Yu after hours to see if it was ok to nurse while I took the medication (I was afraid it was going to go through to my daughter). Dr. Yu called me back right away (Which I appreciated)... however, he got upset with me and told me next time I need to leave a message at his office and not call him at night. I was very upset... I still don't agree with what he says. If I am taking a medication I need to know it's ok for my daughter that I'm breastfeeding. Since then I have switched pediatricians. Also, his office was older... the scale was older.... and it looked run down. However, if the doctor is good, I guess it doesn't matter.