Rockland County’s leader in

Digestive Disease Medicine

Personal attention, superb training and experience, the latest in technological equipment, and an atmosphere of comfort and compassion make the difference in your care.

Why Rockland GI?

We run our practice as Specialist Consultants. This means that we meet with our patients prior to a procedure to best assess their treatment needs and to determine the ideal course of care. We educate patients as to why and how their care will be provided. You will receive a callback with results of tests by a physician so that questions or concerns can be addressed immediately.

Our office has the most advanced endoscopic equipment in Rockland County, allowing all procedures to be done in High Definition. This allows for the most ideal imaging of endoscopic findings, highest detection rates of polyps, and the best outcomes for patients.


Our Physicians

William S. Silver, MD

Dr. Silver received his BS in 1968 from Allegheny College and his Medical Degree from Autonomous University of Guadalajara School of Medicine, Jalisco, Mexico in 1972. He completed his Medical Internship, Residency and Fellowship in Gastroenterology from 1972 to 1978 at Maimonides Medical Center in Brooklyn NY.
He was President of the Rockland County Medical Society, President of the Medical Staff at Nyack Hospital, Chairman of the Medical Executive Committee and a member of the Nyack Hospital Board of Trustees.

Eric L. Tatar, MD MS

Dr. Tatar is a graduate of the Albert Einstein College of Medicine of Yeshiva University, attaining his MD in the year 2000.  Prior to medical school, Dr. Tatar earned a BA from Earlham College and a Master’s Degree in Biology from Tulane University.  He worked for several years at a biotechnology company developing new medications, one of which is on the market for Crohn’s Disease.
Dr. Tatar also spent a year traveling in South America and learning Spanish.  After Medical School Dr. Tatar completed his residency in Internal Medicine and then his Fellowship Specialty Training in Gastroenterology & Hepatology at Robert Wood Johnson University Hospital at Rutger’s Medical School in New Jersey (UMDNJ), finishing in 2006.

He is the author of numerous scientific articles in the field of Gastroenterology.  He is Board Certified in Gastroenterology & Liver Disease.

Svetlana Korenfeld, MD

Dr. Korenfeld received her Doctor of Pharmacy degree from Long Island University in 2001. She entered New York Medical College that same year and graduated in 2005. Dr. Korenfeld competed her residency at Montefiore Medical Center in the Bronx in 2008.

She then moved to Chicago to pursue a Fellowship in Gastroenterology and Liver Disease at University of Illinois, which she finished In 2011. Dr. Korenfeld is Board Certified in Gastroenterology.