Gastroenterology St. Louis, MO

Advanced Treatments for GI Conditions

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Patient-Focused Care for All

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Hundreds of happy patients

The office staff is super courteous, professional, knowledgeable and very friendly. I have used this location for years and Dr Aman Singh ,MD is the best. I have complete trust in her with Endoscopy or Colonoscopy procedures. Wouldn’t consider going to any other location or with anyone else. Thank you to the whole staff for being the best

D.W. Google

I have had Crohn’s disease for 30 years and consistently and regularly get colonoscopies. The center that is a part of G.I. associates is wonderful. The staff is knowledgeable. They run a very efficient center. I highly recommend.

A.G. Google

Dr Thyssen is a very caring and compassionate dr. He is never in a hurry and will sit down and talk with you about all your concerns and then helps to resolve your issues. I highly recommend Dr. Thyssen and his staff.

J.C. Google

I have sent my daughter's to Dr. Banerjee. He is very caring and tries to resolve your problem quickly. His staff is very friendly.

F.D. Google

Other than being incredibly bright, Dr Root is refreshingly kind and compassionate. He communicates clearly so that you understand your diagnosis and treatment options. He is consistently a personable doctor. He actually listens and seems to genuinely care about you. He answers questions in a clear fashion. He calls with lab results in a timely manner., with clear guidance for follow up. I feel fortunate to have him as a GI provider for my family member.

L.M. Google


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Your gastroenterology needs are at the forefront when you choose our team at Specialists in Gastroenterology. We’re a network of skilled and experienced GI professionals who are dedicated to getting you connected with the right resources and treatments. Our team looks forward to becoming a trusted source for your GI needs throughout the St. Louis, MO area. Improve your digestive health today and schedule an appointment.

About Us

An optimal way to detect and prevent cancer is to undergo a colonoscopy before cancer grows to a critical stage. Over 95 percent of precancerous polyps are identified during a colonoscopy and are removed during the procedure. Tissue samples from the polyps are sent to pathology to determine any signs of cancer. A colonoscopy is a preventative measure that safeguards your GI health by eliminating any polyps before they progress to a severe stage. A colonoscopy is a gold standard for both the prevention and detection of colorectal cancer.

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Crohn’s disease and ulcerative colitis are among the most common types of Inflammatory Bowel Diseases (IBD). Many Americans are affected, with around 1.6 million currently impacted by these diseases. IBD is a chronic condition that’s typically diagnosed in patients before the age of 35. As a chronic condition, it can be treated but not completely cured. There are approximately 70,000 new cases in children and adults detected each year.

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