Dr. Koo is very thorough. He asks a lot of questions to make sure he understands your health issue and is willing to work with you to satisfy your needs. I would highly recommend Dr. Koo to anybody in need of a gastroenterologist.

   — Carol Kunzig

They got 5 stars for doing their job. I was pre-screened by 3 minute phone call at home the day before. I was taken on time. My doctor remembered my case, answered all of my questions and the scheduling of the next appointment went very efficiently. This is what I want and don't always get.

   — William Daub

I have been seeing Dr. Koo for several years now as my gastroenterologist. He is always patient, thorough and extremely knowledgeable. I trust his guidance and we always come up with a logical and effective game plan regarding any of my health issues!

   — RK

I have consistent great experiences w Dr Koo. He has taken care of my routine needs (colonoscopies etc) - and more recently helped w an acute problem. Always very caring and provides fantastic care

   — Miller

Informative, thorough, proactive. Excellent overall. Highly recommended.

   — Tetsu Funabashi

Dr. Koo is kind, patient, understanding and phenomenal in his profession. His staff are wonderful and there is rarely a time that you have to wait!! I would recommend Dr. Koo to everyone I know!!

   — Kim Iacovino