Welcome from the 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.

Within the Division of Gastroenterology and Hepatology, three centers have been established to better serve our patients. The creation of the centers demonstrates our commitment to provide our patients with exceptional and specialized GI care. Detailed information about each one can be accessed by viewing the following links: Interventional Endoscopy CenterInflammatory Bowel Disease Center, Gastrointestinal Motility Center, and Women’s Center for Gastroenterological Diseases and Disorders. We are partnering with our colleagues in the Department of Surgery to provide care in the Heartburn and Esophageal Center

We also have a Liver Disease Program in which our skilled physicians diagnosed and treat the full spectrum of liver disease, including hepatitis C. Now, with the approval of new drugs, hepatitis C can be cured with minimal side effects.

The Endoscopy Unit, located within Stony Brook University Hospital, has received the American Society for Gastrointestinal Endoscopy recognition as a center of excellence. The unit has undergone expansion to accommodate an increased demand for services. With more than 13,000 endoscopic procedures performed annually, Long Island residents can feel confident about the expertise of the GI physicians treating them.

The future looks bright. Scientific research continues to be at the cornerstone of our Division. We’re expanding efforts into patient-centered clinical research; we’re growing our drug discovery program; and we’ve engaged in studies of the role of the human microbiome in gastrointestinal health and disease. We are also further streamlining our clinical activities to be more responsive to the needs of patients and their referring physicians.

Our vision for the Division of Gastroenterology and Hepatology at Stony Brook University Hospital is to deliver clinical excellence, advance science and educate the future through a culture of equity and inclusion. 

  • To establish new and continue to grow existing multidisciplinary centers of clinical excellence  
  • To promote scientific advancement and education through research and the creation of innovative curricular programs 
  • To apply equity and inclusion with the goal of improving the care of our patients and diversifying our faculty, fellows and staff

We look forward to providing you with the best medicine has to offer.

Olga C. Aroniadis, MD, MSc, FACG
Svetlana Koroleva Endowed Professor in Gastroenterology
Division Chief, Gastroenterology and Hepatology
Associate Professor of Clinical Medicine
Director, Masters in Epidemiology and Clinical Research Program, Program of Public Health
Director, Women’s Health Center for Gastroenterological Diseases and Disorders
Stony Brook Medicine

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