At Boston Medical Center, our Gastroenterology services include diagnosis and treatment of all kinds of digestive disorders, from peptic ulcers and reflux to Crohn’s disease and cancer. In addition, we care for patients with motility disturbances, neuroendocrine tumors, and hepatobiliary disorders such as cirrhosis, hepatitis, pancreatic disease, and biliary obstruction. As our patient in the Dempsey Center for Digestive Disorders (CDD), you’ll receive a comprehensive, interdisciplinary approach to care that not only includes medical and surgical doctors, but also experts in nutrition, nursing, psychiatry, radiology, urology, and more.

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Specialty Clinics

Colon and Rectal Surgery

The colorectal surgery team at Boston Medical Center is highly skilled in treating common and complex conditions that affect the colon, rectum, and anus. Through multidisciplinary collaboration with the Division of Gastroenterology, and other specialists, our colorectal surgeons develop an integrated treatment plan to ensure that each patient receives the most appropriate care. We offer cutting-edge treatments, including robotic surgery, transanal endoscopic microsurgery (TEMS), and other minimally invasive approaches to ensure patients recover as quickly as possible and achieve the best possible outcome.  

Conditions We Treat

Treatments & Services


An exam where your doctor looks at your large intestine (colon) and rectum using a long, flexible tube with a camera on it. This allows your doctor to find any changes or issues in your colon or rectum, and remove abnormal tissue if necessary.

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Endoscopic retrograde cholangiopancreatography (ERCP)

A procedure used to look at your gallbladder, biliary system, pancreas, and liver. It involves an examination with an endoscope (a long, flexible tube with a light and camera) and X-rays with contrast of your bile ducts, gallbladder, and pancreatic duct.

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Endoscopic ultrasound (EUS)

A procedure that helps your doctor find the cause of abdominal or chest pain, or other symptoms of potential digestive tract and lung issues. It uses an endoscope with high-frequency sound waves that create a detailed image of the inside of your digestive tract and chest, as well as organs such as the liver and your lymph nodes.

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Flexible sigmoidoscopy

An exam where your doctor looks inside your rectum and lower colon using a narrow tube with a light and camera, called a sigmoidoscope. It helps your doctor find the cause of symptoms like changes in bowel activity, abdominal pain, and anal bleeding. It can also be used to screen for colon and rectal cancer.

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Upper GI endoscopy

A procedure that helps your doctor diagnose and treat problems in your upper gastrointestinal (GI) tract, which includes your esophagus, stomach, and beginning of your small intestine. Your doctor will use an endoscope inserted through your mouth to look at these areas, and take tissue samples, remove anything stuck in the upper GI track, or do procedures like endoscope surgery if necessary.

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Capsule endoscopy

A type of endoscopy that uses a pill-sized camera to take images of the middle of your gastrointestinal tract. You swallow the capsule, and the camera inside takes pictures as it goes through your small intestine. A capsule endoscopy can be used to help your doctor diagnose or rule out certain conditions like gastrointestinal cancer, Crohn’s disease, celiac disease, and ulcers.

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Our Team

Leadership Team

Ansu Mammen Noronha, MD

Clinical Director, Department of Gastroenterology, Associate Professor, Boston University School of Medicine

Special Interests

Inflammatory bowel disease; General gastroenterology

Christopher S Huang, MD

Director of Endoscopy, Associate Professor of Medicine, Boston University School of Medicine

Special Interests

Biliary tract and pancreatic disorders, Colon polypectomy, Endoscopic ultrasonography, Gastroesophageal reflux disease, General gastroenterology

Sharmeel K Wasan, MD

Fellowship Director, Department of Gastroenterology<BR>Associate Professor of Medicine, Boston University School of Medicine

Special Interests

Gastroenterology, Inflammatory Bowel Disease, Endoscopy/Colonoscopy, Colon Cancer prevention, General gastroenterology


Uri Avissar, MD

Special Interests

Gastroenterology; Hepatology; Liver transplant

Charles M Bliss, MD

Assistant Professor of Medicine, Boston University School of Medicine

Special Interests

GERD, Colon cancer screening, H. pylori, Stomach pain, Intestinal problems

Anna J Craig, PA-C

Special Interests

Irritable Bowel Syndrome , Gastroesophageal Reflux Disease, Colitis, Inflammatory Bowel Disease, Diverticular Disease

David R Lichtenstein, MD

Director of Endoscopy Program<BR>Associate Professor of Medicine, Boston University School of Medicine, Boston MA

Special Interests

Pancreatic and biliary tract disorders; Gastrointestinal hemorrhage; Acid-peptic disorders; Diagnostic and therapeutic endoscopy

Michelle T Long, MD

Associate Professor of Medicine, Boston University School of Medicine

Special Interests


Robert C Lowe, MD

Assistant Dean of Education, Gastroenterology, Associate Professor of Medicine, Boston University School of Medicine

Special Interests

Viral hepatitis, autoimmune liver disease, and metabolic liver diseases. He serves nationally on the American Gastroenterological Association's Maintenance of Certification Committee

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Arpan Mohanty, MD

Special Interests

Cirrhosis, Liver Failure, Viral Hepatitis, Fatty Liver Disease, Cholestatic Liver Disease

Horst Christian Weber, MD

Special Interests

Gastric acid hypersecretion; Peptic ulcer disease; GI polyps; Polyposis syndromes; Neuroendocrine tumors; Obesity


Jason F Hall, MD

Chief of Colorectal Surgery<BR>Associate Professor of Surgery, Boston University School of Medicine

Special Interests

Colorectal Cancer, Crohn's Disease and Ulcerative Colitis, Laparoscopic, Robotic and Minimally Invasive Surgery, Complex Abdominal Wall Reconstruction, Anorectal and Sphincter Sparing Surgery

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Joanne Favuzza, DO

Colorectal Surgeon<BR>Assistant Professor of Surgery, Boston University School of Medicine

Special Interests

Colon and Rectal cancer, Diverticulitis, Inflammatory Bowel disease, Minimally invasive surgery, Pelvic floor disorders, Hemorrhoids, Anal fistulas, Anal fissures

Patient Resources

Gastroenterology Patient Resources

The support sites and professional organizations below can help you connect with and learn from others who share similar experiences and from professional organizations.

However, please note that medical concerns should always be addressed by your healthcare professional.

IPAA Tips and Resources

If you’ve had ileoanal anastomosis (IPAA or J-pouch) surgery, there’s a lot to learn. See tips from our experts, read first-hand accounts of the procedure, and learn where to find support here.

Colorectal Links

Find out more about colorectal surgery, inflammatory bowel disease, and other gastroenterology-related topics straight from professional medical organizations.

IBD Support Sites

You don’t have to go through IBD alone. Learn from and connect with other people with IBD on these sites.

Gastroenterology Patient Support Services

Your care team includes more than your gastroenterologist. From radiology to mental health support to nutrition services, teams across the hospital are available to help make sure you get the best care possible.

Department News

Get Your Colonoscopy; It Could Save Your Life!

According to The American Cancer Society, excluding skin cancers, colorectal cancer is the third most common cancer diagnosed in both men and women in the United States. People may fear a screening…

Get Your Colonoscopy; It Could Save Your Life!

Research Overview

The Gastroenterology Department at BMC has a long history of clinical research discovery, including the development of the Boston Bowel Preparation Scale, and multidisciplinary research programs, including in the BMC Nonalcoholic Fatty Livery Disease Research Center and Crohn’s and Colitis Research Center. Research is an integral part of our academic program, and we provide trainees with the opportunity for advanced training in this area.

Learn more about gastroenterology research at BMC.

Residency and Fellowship Information

The Department of Gastroenterology at Boston Medical Center offers residency training programs, graduate training programs, and fellowships aimed at helping you become a future GI leader, For more information, click here.