Dr. Mark Matthew Allendorph, MD

He perforated my colon. My life has been a nightmare ever since. I should have sued him. He doesn’t deserve to be called Doctor.

He is very rude, abrupt, horrible bedside manner. I regret taking my son there.

While they did get me in very quickly he did not listen to what I had to say, I told him my symptoms and he scheduled a colonoscopy. When the results came back he told me nothing was wrong and He encouraged me to see a physiatrist. I then scheduled an appointment with another doctor at Barnes because I was still having complications. They did another colonoscopy on me, I had a rectal ulcer with severe bleeding, & a chronic stomach condition. When I called to ask him about what he had told me, he would not return any phone calls.

Dr Allendorph and his staff are wonderful! I never have to wait long at a scheduled appointment. He always makes me feel at ease and is very prompt at ordering tests and getting to the root of your problem. I am a longtime patient and 100% happy with the care that I have received over the years.

I was able to get into see him very quickly. His staff was courteous and helpful. There was virtually no waiting time and when we met he asked a lot of questions and actually listened to me. He performed my colonscopy and I recovered well. He followed up at the hospital and with a phone call. I highly recommend him.

He was very rude and made a horrible statement to me While I(he was her doctor) was caring for my Sister. She was in pain and he did not care .....He ...