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About All Island Gastroenterology & Liver Associates

All Island Gastroenterology (AIG), founded in 1995, is a Long Island-based practice, specializing in the screening, prevention, diagnosis and treatment of all gastrointestinal, liver and nutritional disorders in a professional, private, and caring environment.

We combine state-of-the-art medicine with cutting-edge technology (typically seen at elite hospitals). We provide some of the highest-level care for gastrointestinal, liver disease and colorectal cancer prevention, detection and screening in the Long Island area. At the same time, we stay committed to providing professional, personal and compassionate care while obtaining complete patient satisfaction and comfort during the patient’s visit.

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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.

Lactose Intolerance Breath Test

Lactose intolerance, while not a serious condition, can be quite uncomfortable and can affect the quality of life. Symptoms such as bloating and diarrhea send patients to their gastroenterologist for a checkup. If your physician suspects lactose intolerance, they will order one of two different types of tests to determine if you’re lactose intolerant or not. Both are noninvasive and diagnostic. A lactose intolerance breath test will measure the amount of hydrogen in your breath, which can definitely let your doctor know that you have the condition.

Upper Endoscopy

Your gastroenterologist may order an upper GI endoscopy, also known as esophago-gastro-duodenoscopy (EGD), to either diagnose or treat a problem. EGD can be diagnostic as well as therapeutic. During a typical upper GI endoscopy, your physician will insert a long, thin tube with a tiny camera attached through your throat in order to examine your upper gastrointestinal tract. An endoscopy examines 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, to determine the extent of a specific condition, such as cancer, or to treat an issue.

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.

Diet & Nutrition

Nutrition plays a paramount role in gastroenterology as it directly influences the health and functioning of the digestive system. We have nutritional resources available to help understand the role adequate nutrition plays in preventing and managing various digestive disorders.

Fibroscan

We offer FibroScan in our office, a non-invasive diagnostic device designed to measure the elasticity of liver tissue and detect fibrosis. A fibroscan allows us the ability to provide a non-surgical alternative to a traditional liver biopsy. We are able to present the results to patients in real-time and make treatment plan recommendations

What Our Patients Say About Us

The staff are amazing and very polite. Dr. Lipsky is a wonderful doctor he made me feel so comfortable with speaking with him and accepting his services. I didn't feel judged at all. I will definitely continue to be a patient of his.

Chrissy

Dr. David Schwarzbaum is absolutely incredible and I would recommend him to absolutely anyone who needs a GI doctor.

Ash

Consults are thorough and professional. Dr. Lipsky has a calm, pleasant demeanor. The building where the colonoscopy procedure is done is lovely and relaxing. Wonderful nursing staff. Highly recommended.

Sara

Dr. Lipsky and his Rockville Centre office staff are professional and caring. There is not a long wait in his office and he takes time to listen to your concerns. His colonoscopy suite in Westbury is managed precisely. Good parking and comfortable waiting room.

Rosalyn

I have been seeing Dr Lipsky for over 30 years He has treated me for several serious issues throughout the years. He has always treated me to the point that I always felt better. I trust him and just as important I like Dr Lipsky He also treats my wife. I highly recommend Dr Lipsky if you suffer from digestive issues.

Joe

Dr. Lipsky is one of the best drs.he always takes a good care off me with respect and he is very concern about my time to be check again and he is on top on the results of a test.He call you right away to let you know the results love this dr.I highly recommend him.

Adela

Blogs

IBS

What Does “Normal” Poop Look Like With IBS?

Irritable bowel syndrome (IBS) can make bowel movements unpredictable. Some days you may experience constipation, while on other days you may experience urgency or loose stools.

April 19, 2026

Diet

Is It Bad to Eat Late at Night?

Many people enjoy a late-night snack, whether it’s after a long workday, during evening relaxation, or simply because dinner was earlier than usual

April 19, 2026

Diet

What Conditions Does a FODMAP Diet Help?

Digestive symptoms like bloating, gas, abdominal pain, and irregular bowel movements are common in several gastrointestinal conditions. For many patients, certain foods can worsen these symptoms, making diet an important

April 9, 2026

Diet

What Is the Best Diet for IBS?

Irritable bowel syndrome (IBS) is one of the most common digestive disorders, affecting millions of people worldwide.

April 2, 2026

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Your Trusted Team of
Gastroenterologists