We are accepting all major insurance including Anthem BCBS!

Gastroenterology St. Louis, MO

Advanced Treatments for GI Conditions

Research

Patient-Focused Care for All

Research

Understand GI Concerns

Find A Location

Find Your Local Gastroenterologist

My GI Journey

Want to share your GI journey? You can use your computer, phone, or tablet to easily create a short video sharing your path to better health. Click below to begin!

Record Your JourneyView Videos

Hundreds of happy patients

So thankful that I found Dr. Eric Thyssen many years ago. I never have a concern with trusting my care to him. he is kind and personable and very competent

M.S. Google

Staff was amazing and made sure I was comfortable

R.J. Google

Dr. Root provided my 92-year-old dad the most thoughtful care and was so patient with our questions and concerns. We now have a good treatment plan in place, and my dad and I feel so relieved after fruitless visits to other doctors. In addition, Roup was wonderful and kind during the pre exam process. Finally, both the check-in staff and Alivia in scheduling made those processes effortless. Honestly one of my best experiences overall with a doctor’s appointment.

A.S. Google

Dr. Thyssen was very kind and professional. I didn't feel rushed in sharing my concerns. He listened well and gave good advice.

C.K. Google

Excellent care and interaction with the staff and Dr Thyssen!

L.L. Google

964

Total Reviews

4.9

Average Rating

Gastroenterology Conditions

Colonoscopy

Gastroenterology Procedures

Top Rated Gastroenterologists

Locations

Patient Reviews

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.

Research

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.

Research

Prep Forms

About Home Screenings

Patient Portal

Blog