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.  

Hereditary Hemorrhagic Telangiectasia Program (HHT)

The HHT Program at Boston Medical Center includes medical providers from 10 specialties, committed to providing coordinated, excellent care including genetic counseling and testing, diagnosis, screening, and treatment to optimize the health and lives of those affected by HHT.

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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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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Our Team

Inflammatory Bowel Disease (IBD) Specialists

Juanita D Belton, PA-C

Special Interests

Inflammatory Bowel Disease, Crohn’s Disease, Ulcerative Colitis, GERD

Ansu M Noronha, MD


Special Interests

Crhon's disease, ulcerative colitis, inflammatory bowel disease, fecal microbiota transplant, chromoendoscopy

Liver Specialists

David P Nunes, MD


Special Interests

Liver disease, viral hepatitis, liver lesions

Biliary Specialists

General Gastroenterologists


Olga Beresneva, MD

Colorectal Surgeon

Special Interests

Robotic surgery; Colorectal disorders; Colon and rectal surgery

Joanne Favuzza, DO

Colorectal Surgeon

Special Interests

Minimally invasive, laparoscopic, and sphincter-sparing surgery; Colon and rectal cancer; Ulcerative colitis; Crohn’s disease; Diverticulitis; Fecal incontinence; Anorectal conditions; Emergency general surgery

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.

Crohn's and Colitis Support Group

Are you living with IBD? Join us for a patient support group where you can share your experience, learn about resources, and form relationships with other people living with Crohn’s and Colitis. This is a safe and confidential space where those living with IBD are able to support, encourage, and uplift each other.

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.

Instagram Takeover

Tune in for a day in the life of Dr. Brisas Marie Flores Truncali, one of our star gastroenterology fellows!⁣

She walks us through her morning routine with her dog and highlights some of her wonderful colleagues. She also answers questions on all things gastroenterology and fellowship.

Boston Medical Center Instagram page

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