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About Jonathan David, MD

Dr. Jonathan David and his staff are pleased to welcome you to our practice. Since he graduated from medical school over 30 years ago, Dr. David has cared for hundreds of thousands of patients. Dr. David has served on the faculty of Columbia University’s College of Physicians and Surgeons and more recently the Albert Einstein College of Medicine, teaching gastroenterology to medical students, residents, and most importantly, fellows training in gastroenterology.

Dr. David says his greatest professional joy is caring for people– to find that subtle problem that may have been missed by another physician, or performing an endoscopic procedure that might remove a cancer or help someone avoid a more invasive treatment such as surgery. For over a quarter century, and over tens of thousands of endoscopic procedures, Dr. David has treated each patient as if he or she were family.


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Colonoscopy

A colonoscopy is now the gold standard used to detect or prevent individuals from getting colon cancer. Adults starting at age 45 years are strongly recommended to have a colonoscopy or some other test to screen for colon cancer.

Capsule Endoscopy

During the procedure, a patient swallows a vitamin-sized pill with a camera inside (pill camera). Transported smoothly and painlessly through the GI tract by the body’s own natural peristalsis, the video pill capsule transmits images of different parts of your intestine, such as the small intestine and the esophagus.

ERCP

An endoscopic retrograde cholangiopancreatography, more commonly known as ERCP, is an endoscopic procedure that is also combined with X-rays. ERCP is very much like a typical upper GI endoscopy; however, your gastroenterologist will inject a dye during the procedure, which highlights problems in certain digestive organs through X-ray technology.

Flexible Sigmoidoscopy

A sigmoidoscopy is an internal exam of the lower part of the large intestine (colon) using a short, thin, flexible, lighted tube with a camera at the tip. This procedure helps determine the cause of abdominal pain, rectal bleeding, changes in bowel habits, chronic diarrhea, and other intestinal problems.

Hemorrhoid Treatments

Two of the most common treatments for hemorrhoid removal are hemorrhoid banding, which cuts off blood flow to the hemorrhoid, and infrared coagulation (IRC) therapy, which uses infrared light to shrink and shrivel hemorrhoids. The treatment method depends highly upon whether the hemorrhoids are external (around the anus) or internal (in the rectum).

Upper Endoscopy

An endoscopy is a very common and safe procedure that is used to examine the esophagus, stomach, and upper part of the small intestine, known as the duodenum, to get a closer look at what may be causing symptoms.

Celiac Disease

Celiac disease is an autoimmune disease where a patient’s immune system abnormally responds to the ingestion of gluten. It is estimated that 1 in 100 people worldwide is affected by celiac disease. However, up to 2.5 million people in the United States may have celiac disease and not know it, as the symptoms range from mild to severe.

Constipation

Constipation is defined as having a bowel movement fewer than three times per week. With constipation, stools are usually hard, dry, small in size, and difficult to eliminate. Some people who are constipated find it painful to have a bowel movement and often experience straining, bloating, and the sensation of a full bowel.

GERD

Gastroesophageal reflux disease (GERD) is a more serious form of gastroesophageal reflux (GER) which is common. GER occurs when the lower esophageal sphincter (LES) opens spontaneously, for varying periods of time, or does not close properly, and stomach contents rise up into the esophagus.

Hemorrhoids

Hemorrhoids are swollen veins in the anal canal. This common problem can be painful and can be caused by too much pressure on the veins in the pelvic rectal area. Normally, tissue inside the anus fills with blood to help control bowel movements, but if you strain or sit on the toilet a long time to move stool, the increased pressure causes the veins in this tissue to swell and stretch.

Inflammatory Bowel Disease + Crohn's Disease & Ulcerative Colitis

Inflammatory bowel disease (IBD) encompasses a set of gastrointestinal diseases where parts of the digestive tract are chronically inflamed by a dysfunctional interaction immune system. Hereditary factors and an abnormal interaction between microorganisms and the immune system are felt to play a role.

Irritable Bowel Syndrome

It is estimated that 10 to 15 percent of Americans have Irritable Bowel Syndrome (IBS). IBS is a functional GI disorder that refers to a group of symptoms that affect the digestive tract, often resulting in abdominal pain, bloating, or cramping. However, some people with IBS have no symptoms at all.

What Our Patients Say About Us

Dr. David and his staff were professional, supportive, and totally responsive. Would recommend Dr. David.
LaRue
LaRue
I had a great experience with Dr, Jonathan David. He was able to resolve issues I’ve had for years in a matter of months. Very grateful to have found him.
Oneida
Oneida
Dr. Jonathan is a really wonderful Doctor. It's so great to find Doctors that are very knowledgeable in their chosen specialty.
Sandy
Sandy
I had a great experience Dr. David’s office. Everything about the process was a smooth as it could
Rich
Rich
I would recommend Dr David and his staff: very professional and efficient
Sean
Sean
I highly recommend Dr. David. He is a wonderful gastroenterologist; very friendly and his staff is accommodating.
Michele
Michele
Dr. David’s excellent, caring and professionalism makes him one of the best in his field, highly recommend him, very satisfied with his knowledge
Luchy
Patient Testimonials
My GI doctor, Dr. Jonathan David, is awesome in person as well as on the phone. He's polite, professional, courteous, not to mention, he goes above and beyond for his patients. His staff is nice, helpful and friendly too. Thank you.
Vanessa
Patient Testimonials
I would highly recommend Dr. David. He is personable and takes his time to discuss your health and answer any questions.
Sandy
Patient Testimonials
I highly recommend Dr. David my experience with him was very positive he was very kind and professional thank you Dr David!
Gina
Patient Testimonials
My experience with Dr. David and his staff was very positive, from beginning to end. Everyone was professional and kind. I highly recommend this office.
Anita
Patient Testimonials

Blogs
IBS

Avoiding Dehydration with IBS

Living with irritable bowel syndrome (IBS) means paying close attention to what you eat, how you feel, and how your body responds day to day. One factor that often gets

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October 5, 2026
IBS

How to Get Enough Fiber With IBS

Managing irritable bowel syndrome (IBS) can be challenging, especially when it comes to dietary choices. One crucial aspect is understanding how to get enough fiber with IBS. Fiber plays a

Read More »
September 21, 2026

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