Patient Reviews

We understand that finding a provider that will truly listen to your concerns isn’t always easy. At Adult Gastroenterology Associates, our patients are our top priority. We strive to create a thoughtful and compassionate environment where you can trust that your care is customized to your needs. Take some time to browse through our reviews below, so you can read first-hand about the dedication and care that our specialists provide patients in the Tulsa, OK community.

5.0 Review from C.C. Source: Google Mar 25 2023

"My entire experience, having two procedures at Tulsa Endoscopy Center was beyond excellent. Dr. Clark and his staff are a class act."

5.0 Review from G.L. Source: Google Mar 25 2023

"Kindness, courtesy and attention to all my immediate needs. Thank you for caring."

5.0 Review from M.R. Source: Google Jan 25 2023

"Took my mom in to see Dr. Kliewer and from the beginning, we received comforting care. His front desk staff was friendly and accommodating. Once we got back to the examining room, a translator was afforded to us and Dr. Kliewer came in and he was friendly, informative, but most important patient and kind with my mother. I truly appreciate Dr. Kliewer, his staff and the work they do. Thank you."

5.0 Review from L.D. Source: Google Dec 25 2022

"Dr. Nightingale is friendly and thorough. His staff are friendly, kind and very efficient. Couldn't ask for a better gastro facility."

5.0 Review from S.S. Source: Google Dec 25 2022

"Dr. Douglas Kliewer is amazing, He made a stressful time a cake walk. He was kind,understanding and knowledgeable"

5.0 Review from S.N. Source: Google Oct 25 2022

"Easy to talk to, listens to what I’m saying, schedules tests and followups to find the problem. Highly recommend"

5.0 Review from A.A. Source: Google Sep 25 2022

"Very kind, detailed and great bedside manner"

5.0 Review from D.D. Source: Google Aug 25 2022

"The doc came in and we talked about what I would be going through prior to during and after the operation. He provide excellent info and left me feeling I was in excellent hands."

5.0 Review from N.W. Source: Google May 25 2022

"It was a great experience. I would recommend this to anyone."

5.0 Review from J.M. Source: Google May 25 2019

"The girls up front were GREAT!!! I hate neeting a new Dr (who doesn't right) but Dr Conkling made me feel like he was very caring about what was going on with me. He layed it all out for me the good and bad. Ty Dr Conkling for making me feel better and not to be so scared. U r AWESOMENESS!!!"