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).
Why Choose Us?
Our gastroenterologists and staff at Waco Gastroenterology 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.
The physicians at Waco Gastroenterology Endoscopy Center not only meet but exceed U.S. benchmarks for quality in colonoscopy. Our adenoma detection rate (ADR), the rate at which our GI doctors identify adenomatous colon polyps, surpasses the national benchmark of 25 percent. See Our Scores.
Additionally, 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
Waco Gastroenterology 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 Waco community.
Patient Forms
At Waco Gastroenterology 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 you may complete before your 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
Waco Gastroenterology 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 before your procedure. You will be responsible for any co-pays and deductibles. We accept cash, check or credit card.
2,276 Reviews
Feb 2, 2026
Dr. Contreras is a wonderful doctor who is extremely knowledgeable, compassionate and skilled. The nurse anesthesiologist, Joe, was outstanding and very helpful in letting me know what to expect with the anesthesia. Melissa was my recovery nurse and followed up with me the next day in addition to helping to get the front office to forward another link for the portal. The front office staff were kind, but at times, not very responsive to messages. Also, the prep info that they supplied was incorrect, which was a bit problematic. However, I highly recommend Dr. Contreras and his immediate staff.
Feb 2, 2026
The staff was extremely professional in how I was treated. They were very professional in going over in detail about the procedure and making sure I was comfortable.
Feb 2, 2026
Everything went well They calmed me down and made me feel at ease
Feb 2, 2026
Dr Henysak is a kind, caring physician. He will always be my doctor, no matter where I live. His staff is great and he always takes great care of me doing any procedure I have done. He is a super nice human being.
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