We’ve Been Named One of U.S. News & World Report’s Best!
The Endoscopy Center and The Endoscopy Center North have been named one of the Best Ambulatory Surgery Centers in the nation by U.S. News & World Report.
Why Choose Us?
Our gastroenterologists and staff at The Endoscopy Center are dedicated to providing quality, affordable care to the community in our quest to lower colon cancer rates and treat an array of digestive diseases, including Crohn’s Disease, irritable bowel syndrome (IBS) and gastroesophageal reflux disease (GERD).
Our board-certified GI doctors specialize in a myriad of GI procedures, including colonoscopy, flexible sigmoidoscopy and upper endoscopy.
Our patients value the compassionate care they receive from our GI doctors and say they are likely to recommend our center for GI procedures.
If you are due for a colonoscopy or in need of a GI procedure, don’t put it off any longer. Give us a call today!
For Your Visit
The Endoscopy Center is committed to ensuring that your experience with us is relaxed and worry-free, from consultation through recovery. To assist us, we ask that you read and comply with all guidelines.
We’re pleased to partner with StopColonCancerNow to help boost colon cancer screenings and prevention for residents in the Knoxville community.
Patient Forms
At The Endoscopy Center, your time is as valuable to us as it is to you. That’s why we provide online access to a variety of forms that patients may complete before their visit. The following documents will help us expedite the check-in process for your appointment. Please take a moment to download and print the appropriate form(s).
Insurance and Billing
The Endoscopy Center accepts most major insurance. As a courtesy to you, we will bill your insurance carrier for you; however, we cannot tell you what your policy will cover. Since your insurance policy and coverage are between you and your carrier, we urge you to contact them prior to your procedure. You will be responsible for any co-pays and deductibles. We accept cash, check or credit card.
Meet the Doctors
View All Doctors
Johnny Altawil
M.D.
Steven J. Bindrim
M.D.
Zachary Dickson
M.D.
William Ergen
M.D.
Jeffrey S. Gilbert
M.D.
John M. Haydek
M.D., A.G.A.F., F.A.C.G., F.A.C.P., F.A.S.G.E
Jason Huffman
M.D.
Hannah Jones
D.O.
Kevin Patrick Meyers
MD
Tejal Mistry
MD
Matthew Moore
M.D.
Raj I. Narayani
M.D., F.A.C.G., F.A.S.G.E
Maria B. Newman
M.D.
Ramanujan Samavedy
MD
1,737 Reviews
Apr 22, 2026
Apr 21, 2026
I always get friendly caretakers and attention to all my needs!
Apr 21, 2026
I had a very positive experience during my follow up visit with Melanie. She was very professional and extremely interested in what was bothering me at the time. She is a good listener and displayed extensive knowledge of my issues. She was eager to get to the bottom of my issues and provided excellent feedback on the remedies available. I left there with a feeling of satisfaction and the belief that she was on the right track to resolve my problems. This was not the first time that she was involved with my gastrointestinal diagnosis and I am looking forward to working with her in the future. I would recommend her office and Melanie in particular for all your gastrointestinal problems and treatment.
Recent Posts
Patient Finds Answers Through Timely GI Evaluation at ASC
Discover how one patient found answers for chronic digestive issues at an ambulatory surgery center (ASC).
The Endoscopy Center West Nominated for Best in Tennessee Award
Vote today for The Endoscopy Center in the Best in TN Awards! We’re Knoxville’s trusted ASC, delivering compassionate GI care and leading the fight against colon cancer.
Dr. Altaweil is the best doctor I have ever seen. He is very knowledgeable, has a great bedside manner, and is thorough in his explanation of problems and procedures. I highly recommend him!