Main Street Medical Services, PLLC


Main Street Medical Services, PLLC

At Main Street Medical Services, PLLC, our team aims to provide you with the highest quality of professional care in treating your digestive diseases as well as maintaining your overall health. We pride ourselves in our compassion and attention to the patient while giving the best care possible.

Along with treating common GI related issues like Acid Reflux, Abdominal pain, and Diarrhea, we also pay particular attention to preventative care in screening for colon cancer. We are skilled in endoscopic techniques and therapies for diagnosing and treating GI disorders. Our friendly staff are always available to make your experience with us the most comfortable and professional as it can be.



GERD is a common disorder affecting more than 17 million adults and children. It occurs when stomach contents and acid flush back up into the esophagus causing irritation and inflammation in the esophageal lining

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Barrett’s Esophagus

Barrett’s esophagus is a serious complication of GERD, which stands for gastroesophageal reflux disease. In Barrett’s esophagus, normal tissue lining the esophagus — the tube that carries food from the mouth to the stomach

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There is no clear evidence to suggest that the stress of modern life or a steady diet of fast food causes ulcers in the stomach and small intestine, but they are nonetheless common in our society:

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Colon Conditions

The colon is also called the large intestine. The ileum (last part of the small intestine) connects to the cecum (first part of the colon) in the lower right abdomen. The rest of the colon is divided into four parts:

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Celiac disease

Celiac disease — also known as celiac sprue or gluten-sensitive enteropathy — is a digestive and autoimmune disorder that results in damage to the lining of the small intestine when foods with gluten are eaten.

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Irritable bowel syndrome (IBS) is a common disorder of the intestines that leads to crampy pain, gassiness, bloating and changes in bowel habits. Some people with IBS have constipation

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Main Street Medical Services, PLLC

David J. Beyda, MD

55-16 Main Street Flushing, New York 11355
P: 718-461-6161
F: 718-461-3590

Office Hours

Monday: 10:00am – 5:00pm
Tuesday: 9:00am – 5:00pm
Wednesday: 10:00am – 5:00pm
Thursday: 1:00pm – 5:00pm
Friday: Call for Appointment
Saturday – Closed
Sunday – Closed

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