I suffered for over a year with facial pain. Thinking it was a dental problem, I went to several dental specialists with no results. When the pain went into my to... Read more
My surgery was estimated to take approximately three hours; it was completed in less than two. He is very efficient, professional and knowledgeable, and anyone with ... Read more
This should have been said almost three years ago . I owe her my life. She removed a brain tumor. Words cannot describe how I feel. I am alive and well.
I love this Dr, he saved my life and am still under the care of him and his team. Can't say enough good things about him and the Cleveland Clinic. The drive from Sa... Read more
Great doctor! He listens to you and explains everything clearly. Does not talk down to you. I trust him 100%. Very caring. His personality puts you at ease.
I have had four back surgeries, two of them done at Cleveland Clinic and would also not have anyone other than Dr. Kalfas operate on my back. Superb care.
DR. Collis,I was a patient my first visit was rather abrupt he spent about 15 minutes with me and when i went to ask my questions he said our time is up i have other... Read more
I call BS. He couldn't even be there for the follow up! Didn't control the pain as he promised he would. Didn't tell me he was leaving!
By far the BEST neurosurgeon I have EVER worked with!! I wish he was still at Cleveland Clinic, if he was i would make the six hour drive for all of my care.
Great Doctor. Spends time and explains everything in detail.
Sign up for our newsletter to get the latest health news and tips.