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Your Trusted Gastroenterology
Experts in St. Louis, MO: Specialists in Gastroenterology
Experts in St. Louis, MO:

Personalized, Around-The-Clock Treatment By Board-certified Physicians
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.
OUR SERVICES
Anorectal Manometry
Capsule Endoscopy
Chronic Care Management
Colon Cancer Screening
Colonoscopy
CT Scan or CAT Scan – Computed Tomography
Endoscopic Mucosal Resection
Endoscopic Retrograde Cholangiopancreatography
Endoscopic Ultrasound
Enteroscopy
Esophageal Dilation
Esophageal Manometry (Motility Study)
Esophagogastroduodenoscopy (EGD)
Feeding Tube Insertion (PEG)
FibroScan®
Flexible Sigmoidoscopy
Hemorrhoid Banding
Infusion Therapy (IV Infusion)
Virtual Telemedicine
Services
Anorectal Manometry
Capsule Endoscopy
Chronic Care Management
Colon Cancer Screening
Colonoscopy
CT Scan or CAT Scan – Computed Tomography
Endoscopic Mucosal Resection
Endoscopic Retrograde Cholangiopancreatography
Endoscopic Ultrasound
Enteroscopy
Esophageal Dilation
Esophageal Manometry (Motility Study)
Esophagogastroduodenoscopy (EGD)
Feeding Tube Insertion (PEG)
FibroScan®
Flexible Sigmoidoscopy
Hemorrhoid Banding
Infusion Therapy (IV Infusion)
Virtual Telemedicine
LATEST RESOURCES

Primary Biliary Cholangitis (PBC) in St. Louis, MO
What is PBC (primary biliary cholangitis)? Primary biliary cholangitis (PBC), once known as primary biliary cirrhosis, is a rare chronic liver condition. PBC is a degenerative immune system condition that steadily damages the bile ducts (called the intrahepatic bile ducts) in your liver. Bile helps digest fats and transports away bad cholesterol, impurities, and bilirubin.
Read MoreReviews
I had a colonoscopy performed by Dr. Thyssen and was extremely impressed with the entire experience. His office was professional and provided clear, detailed instructions to help me prepare. Dr. Thyssen and his team offered exceptional care throughout the procedure, and he personally called in the afternoon to check on how I was doing. When the results of the biopsies came back, he called again to discuss them and explain everything clearly. I’m now following his recommendation to have another colonoscopy in six months to make sure that a large benign polyp was completely removed. I really appreciate his thoroughness, follow-up, and compassionate care. Highly recommend.
The doctor and his staff were very helpful and explained everything to me in detail. Hopefully they are there in 10 years when I have to do this again.
Very pleased with the knowledge and professionalism of Dr Shaikh -listen carefully to the patients and answers of a question
Was glad I was referred to AEC. Dr Root and his team were very personally and caring. Quick and easy.
The best experience possible.
Dr. Thyssen has been my G.I. Doctor for many years, he's very friendly, knowledgeable & professional.
His office staff are friendly, professional & helpful.
My appointments are usually on time with very little time spent waiting.
I highly recommend this office.
His office staff are friendly, professional & helpful.
My appointments are usually on time with very little time spent waiting.
I highly recommend this office.
Dr Thyssen is such a wonderful Doctor. He sits and listens to you and never rushes to go to another patient. He takes time to talk with you. I wish all Doctors would be like him.
The facilities, nursing and support staff are excellent and the physicians are top notch. I would recommend them to any & everyone.
This was a great experience, the Dr knew right away what my health problem was and presented several solutions.
Dr Singh is thorough, compassionate and highly skilled. I have been dealing with GI issues for years and in my first visit she offered a protocol that is beginning to show progress. I am so grateful to have found her.
Dr. Singh is the best! She really listens, and is compassionate. The staff is also excellent! I’ve received good care and have referred other people, and they get the same personalized service.
Dr Weinstock has helped me when no others could. The combination of living in a rural area and having moderate MCAS has been so hard. I couldn’t find practitioners that could help. In fact I felt like they led me in the wrong direction most often. Finally Dr Weinstock spoke my language. We are using both traditional medicine and supplements for my unique situation. It is working. I finally feel better!
Dr. Weinstock and his staff are terrific! The staff is friendly and quick to answer questions. Dr. Weinstock is calm, professional and takes his time with his patients. Most importantly, he listens! If you email questions, he always promptly responds. I trust him. It’s a bit like an old fashioned approach to patient care with all the advantages of the most up to date medicine. I highly recommend!
Patient of Dr. Thyssen for many years. Attentive, actively listens. I have referred people to him personally and professionally.
Dr. Weinstock is an excellent gastroenterologist!
Dr. Weinstock is hands down the most compassionate and wise doctor I’ve ever known. Highly recommend him and his practice.
All went well and in a timely fashion. Team was professional and friendly.
Facility is clean, staff courteous and Dr Weinstock absolutely the best when it comes to information.
Excellent staff, Dr. Banerjee was pleasant and very professional.
Great treatment and patient skills. We need more doctors like Dr Root. Many thanks.