Excellent Doctor. Communication is excellent. Calls his patients personally. Works diligently to find the problem. You are a true professional Dr. Zimmerman.

Submitted Feb. 25, 2015

Is the second best Dr. I have ever been to for diabetes, best was Mark Sperlng in Pittsburgh who is in the top 1%. Takes a lot of time, clearly answers questions and listens carefully to questions concerns. Is up on current research and trends.

Submitted Oct. 22, 2012

worthless. wanders in when he feels like it, ignores questions when asked.

Submitted Jan. 3, 2011