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GI Center

CHA Somerville Campus | 33 Tower Street | Somerville

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CHA Urgent Care, the CHA Eye Center, the GI Center, Dermatology and the Sleep Lab are now open. All other services at the Somerville Campus are still closed. Please look for more updates soon. 

Problems with your stomach, bowels and the rest of your digestive system can be uncomfortable and unpleasant. The Gastroenterology (GI) team can help.

Trust Your Gut. Choose CHA.

Our experts diagnose and help treat common and complex digestive issues in patients 16 and older. They use a wide range of tests and procedures to maintain or restore your health. This includes endoscopy to see into your throat and stomach and colonoscopy to screen for colon cancer.

When you choose CHA for GI care, you will find a caring team that listens to your concerns, keeps you informed, and makes sure you feel comfortable at every step.

Advanced Tools and Technology

CHA doctors use state-of-the-art methods to diagnose your problem and detect any health issues. These include minimally invasive imaging to see inside your body using a tiny camera. We also use an advanced technique called Virtual Chromo (Capsule) Endoscopy, which uses a tiny wireless camera to take pictures of your digestive tract. These methods are the same as used at Boston’s leading teaching hospitals, but available to you in a smaller, more personal setting.

Colon Cancer Screenings

Colorectal cancer is a major health risk for middle age and older adults – but it is often preventable. Regular screenings can find polyps before they become cancer. At CHA, we do colon cancer screenings in Somerville and Everett. There are several different colon cancer screening tests. The most common is a colonoscopy.

Screenings often start at age 45 or age 50, depending on your age, background and family history. Please talk to your primary care team about the pros and cons of each screening test and how often you should be tested. 



Paul Lesser, MD Chief of Gastroenterology

Finding a provider for your gastroenterology needs is easy. Search our provider listing and then make a call today to set up an appointment.

Find a provider

Services We Offer

  • Esophagogastroduodenoscopy (EGD)
  • Colonoscopy
  • Esophageal motility
  • ERCP
  • Virtual Chromo (Capsule) Endoscopy

Conditions We Treat

  • Heartburn and Gastroesophageal reflux disease (GERD)
  • Dysphagia (difficulty swallowing)
  • Colon Cancer Screening and Colon Polyps
  • Peptic Ulcer Disease and Heliobacter Pylori (HPYLORI)
  • Inflammatory bowel diseases including Crohn’s and Ulcerative Colitis
  • Rectal Bleeding, Constipation, Diarrhea and Gas
  • Celiac Disease and Food Intolerances
  • Liver Problems including Hepatitis and Cirrhosis
  • Anemia
  • Irritable Bowel Syndrome (IBS) and Stomach Pain
  • Diverticulitis, diverticulosis and ischemic bowel disease

Where You Can Find Us


CHA Cambridge Hospital

1493 Cambridge Street
Cambridge, MA 02139


Everett Hospital

CHA Everett Hospital

103 Garland Street
Everett, MA 02149


Affiliated with:
Teaching hospital of: