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NYU Langone Nassau Gastroenterology Associates offers the highest level of patient care related to the prevention, diagnosis, and treatment of digestive disorders, including Crohn’s disease and ulcerative colitis. We perform a wide variety of screening and therapeutic procedures, including sigmoidoscopy, colonoscopy, upper endoscopy, and acid (pH) monitoring, in the comfort of our offices.


U.S. News & World Report’s “Best Hospitals” ranks NYU Langone among the top 5 hospitals in the country for gastroenterology and GI surgery.

We also continue to advance our knowledge of gastrointestinal diseases through clinical trials, which our patients are invited to join. Clinical trials take place onsite at our location through our clinical research department, NYU Langone Long Island Clinical Research Associates.

Our Location

NYU Langone Nassau Gastroenterology Associates

1999 Marcus Avenue, Suite 300, New Hyde Park, NY, 11042

Additional Information

Information About Your Doctor’s Office Visit

Get information to help you prepare and learn what to expect.


We provide onsite parking with complimentary valet service.


Free Wi-Fi is available to patients and visitors.


Patients or doctors seeking a referral to one of our physicians may call our office at 516-466-2340.

Office Hours

We are open Monday through Wednesday from 7:00AM to 5:00PM, Thursday from 9:00AM to 5:00PM, and Friday from 8:00AM to 5:00 PM.