Get Answers for Digestive Symptoms.

From colonoscopies to complex GI conditions, Stony Brook Medicine connects you with nationally recognized specialists and advanced treatment — so you can get clarity and relief sooner.

Stony Brook Doctors

Why Patients Choose Stony Brook for GI Care.

  • Nationally recognized GI specialists
  • Advanced, minimally invasive procedures
  • Access to advanced treatment options
  • Coordinated care across a leading academic center

Care for Every Stage — From Screening to Complex Treatment

Colonoscopy & Screening 

Early detection saves lives. If you’re 45 or older, our Fast Track program makes it easy to schedule and complete your screening with minimal disruption.

Learn About Colorectal Screening

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 Inflammatory Bowel Disease (IBD)

Get expert care for Crohn’s disease and ulcerative colitis, including access to advanced biologics and clinical trials.

Learn About IBD Care

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Interventional GI

Minimally invasive procedures for complex conditions — so you can avoid more invasive surgery whenever possible.

Explore Interventional GI

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Swallowing / Motility

Comprehensive diagnostic and treatment capabilities — so you can get answers without being referred elsewhere.

Learn About GI Motility

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Olga Aroniadis

Welcome from Our Chief

I am pleased to welcome you to the Division of Gastroenterology and Hepatology. Our highly trained physicians, with expertise in key gastroenterology (GI) areas, are available to you for evaluation, diagnosis and treatment. We are fortunate to be an integral part of Stony Brook Medicine, Long Island’s premier academic medical center, where we can draw on the resources of world-class physicians, healthcare staff, technology and state-of-the-art facilities.

Read More From Dr. Olga Aroniadis

World-Class Care,
Close to You.

View our GI locations in your area.

See All Locations
Stony Brook University Hospital

Don’t wait to get answers.

Digestive symptoms can disrupt your life — and sometimes signal something more serious. Our specialists are here to help you understand what’s going on and what to do next.