Dr. Koo is the best. He truly cares about his patients. My experience with him is invaluable. He listens and calls me back when I don't know what to do. No doctor has assisted and cared as much as he has. He wants me better as much as I want to be better. I appreciate him and no matter the issue he is always thinking through things with me. His is an asset to Advocate and I sincerely hope you recognize that I have already referred my adult daughter, husband and neighbor to him.

I appreciate that Dr. Koo is straightforward and treats me like an equal, not just a task to be checked off his "to-do" list.

Very respectful, kind and always makes sure your questions and concerns are answered. He treats you like a person and listens to you. I look forward to going to the Doctor now.

I am extremely satisfied with the service .

Everyone my wife and I saw were great very caring and helpful

Dr koo is great, highly recommended

Very positive experience. Never felt rushed.

This was my first ever visit with Dr. Koo. I was very impressed and returned home happy with my choice.

Really great experience. So happy for the choice. Strongly recommend.

Dr Koo is awesome The central call center for Advocate is ineffective. It's abysmal. Four of the last five times I've called the nurses/clinical representative state that they will send a message to Dr Koo; yet that has not occurred 4 times. The last time I called I asked to speak to someone in Dr Koo's office since the call center fails to pass on communication which for health care has severe consequences which force us to consider moving providers. Only reason we stay is the great service and good doctor and service that Dr Koo. Call center is useless and it's a train wreck with severe consequences.