I'm sorry to hear that David Chen is retiring I always had a wonderful experience with him. And very knowledgeable. I do know that he will be well missed. I'm hoping that my new provider will be as well trained with working with people as he was. I have had some bad experiences with a knee doctor there. And I explained this to him David Chen about the situation. That this knee doctor never even took my pants off. To look at my knee. Told me it was in my back right away. I felt like a football on a on the football field. It was getting passed back and forth between him the knee doctor. And the back doctor. When I made this complain that David Chen. He had me take my pants off. And put his hands on my knee. And found out it was very warm and swollen. This is something on the knee doctor should have done. Instead of passing me along to the next guy. If it wasn't for David Chen. I wouldn't have came back to Aurora. I'm hoping my new provider is going to be as good as him. 
HAR Internal Medicine