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About Gastroenterology Group of Northern New Jersey

The Gastroenterology Group of Northern New Jersey represents the premier gastroenterology practice in the region. Our physicians have come together with a goal of providing excellence in clinical care in a safe and compassionate environment. We provide care in all aspects of gastrointestinal diseases.

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 New Jersey 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.

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. Fiorillo is the best! He is easy to talk too and makes you feel comfortable. He is prompt in returning calls and emails within 24 hours. He has help not only me but my father as well. Office staff is very polite. I highly recommend Dr. Fiorillo.
Terry J.
Terry J.
Dr. Ivan Friedrich had diagnosed me in 2009 and has helped me every step of the way. He is very caring and also takes the time out to get to know who you are.
Alex Z.
Alex Z.
Just had a endoscopy & endoscopy with Dr. Kaplounov. All I can say was that this is a 5 star physician. Explains everything, professional, pleasant and truly cares about her patients.
James R.
James R.
Dr. Meininger is an amazing physician. He's extremely competent and compassionate - he personally called me to discuss my test results because he knew that if I heard from one of the office staff, I might misinterpret the results. Whenever I've called with questions, he calls me back promptly and patiently answers all my questions.
Shari S.
Shari S.
Wow, Dr. Rubin was one of my best doctors. He listened to what I had asked for, explained to me what he was doing, as well as why he was doing it, did not make me feel rushed, and encouraged questions.
Schlomo S.
Schlomo S.
If anyone deserves the title, it is Dr Zingler, as he was the first doctor to diagnose my condition and to see that I received the best possible care. Believe it or not, I was diagnosed with pancreatic cancer TEN YEARS AGO and I am still celebrating life with no evidence of recurrence.
Carol R.
Carol R.
I have been a patient of Doctor Spinnell for many years. I have chronic pancreatitis which Doctor Spinnel diagnosed when no other doctor was able to. His style of treating at least my situation is trial and error avoiding major surgery at all costs.
MB
Patient Testimonials
I find Dr. Kancherla very knowledgeable, understanding and professional. He is always willing to listen. He is an outstanding doctor.
G. White
Patient Testimonials
I cant say enough how professional and empathetic Dr Sapienza was throughout the process. His bedside manners were second to none, was able to explain the process and results very easily, did not rush me and answered all of my questions. Would highly recommend Dr Sapienza you will not be disappointed.
Seth G.
Patient Testimonials
I've been going to Dr. Meininger for over 10 years and cannot be happier. He is one of the best out there. His knowledge, professionalism and ability to lift spirits is 2nd to none. Dr. Meininger always takes the time to speak with, listen and ensure his patients are comfortable and understand the conversation.
Jay
Patient Testimonials
EXTREMELY happy with Dr. Kancherla and the entire staff where I had my endoscopy done. Dr. Kancherla was thorough and very knowledgeable from the very first visit, I felt heard, and most importantly like I was in great hands - he made me feel comfortable and informed through it al
Angelica
Patient Testimonials
My experience with Dr. Sapienza was excellent in every aspect. His manner during my consultation was absolutely professional and amazingly personable, and his office handled everything with reassuring efficiency.
Steven H.
Patient Testimonials
Very professional staff. Everyone was friendly & helpful. Dr. Han really took the time to listen to my issues. Together we came up with a positive treatment plan.
SH
Patient Testimonials
Dr. Yang was very knowledgeable, kind and patient. She explained everything very thoroughly and in way that I could understand. I definitely didn't feel rushed like I have with other providers- she took time to listen to me. I definitely recommend her to others!
Ashley R.
Patient Testimonials
Dr. Han was professional and knowledgeable about my condition. I felt comfortable talking to him, and would recommend him emphatically.
JS
JS

Blogs
IBS

How to Relieve IBS Pain

The abdominal pain and cramping of irritable bowel syndrome (IBS) can range from a nagging ache to a flare that stops you in your tracks. If you are searching for

Read More »
August 8, 2026
Bloating

How to Stop Bloating After Meals

That tight, swollen, uncomfortable feeling that shows up after eating is one of the most common digestive complaints, and it can turn an enjoyable meal into hours of discomfort. The

Read More »
August 1, 2026
Diet

How to Follow an Elimination Diet for IBS

For people living with irritable bowel syndrome (IBS), food can feel like a minefield, with meals sometimes triggering abdominal pain, bloating, and unpredictable bowel habits. A structured elimination diet is

Read More »
July 22, 2026

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