Your Trusted Team of
Gastroenterologists

Our Locations Book Appointment

About Center for Digestive Diseases

When you need a truly high-quality treatment center for your digestive problem, look no further than Center for Digestive Diseases, our board-certified gastroenterologists and our outpatient endoscopy facility, EndoSurgiCenter.

People of all ages see us for abdominal pain, constipation, diarrhea, gastroesophageal reflux disease (GERD), nausea, celiac disease, Crohn’s disease, ulcerative colitis, gastrointestinal bleeding (GI bleed) and more. We perform colonoscopy, endoscopy, hemorrhoids removal, ERCP for pancreas and bile duct gallstone removal. EndoSurgiCenter has been recognized by several leading organizations for our high-quality care.

Learn More

Patient
Forms

Preparation
Instructions

Insurance and
Billing

Patient
Forms

Insurance and
Billing

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, Including Crohn’s Disease and 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

Colon cancer runs in my family, subsequently I have been getting colonoscopies since age 35. Dr Muthusamy and his Staff have been a great asset.

Joe

Dr. Ramasamy is the most attentive and considerate doctor I have seen. He has excellent bedside manner and actually listens to his patients, giving them the time that they deserve.

Dana

Dr Chirla was very professional and made very comfortable with my first procedure . It’s smooth, on time and well explained what is going on. I highly recommend to anyone!!! Thank you

Kan

I would like to personally thank Dr. Geethan Sivananthan my Anesthesiologist all Nurses and staff in the clinic. You were all very professional, courteous an polite. Couldn't do my procedure any better. Thank you all very much.

Emil

He is an extraordinary doctor, he treatment me with respect and consideration after my Upper GI. He took the time to explain to me what happen with my liver. Thank you Dt. Ramasamy I give you 5 starts nevadas you deserved it.

Janet

I recently visited Dr. Chirla's office at Union NJ for my annual colonoscopy. It was my first time and I was impressed with the experience provided by Dr. Chirla. She was professional and highly acknowledged, I got the answers to all my questions in a very good manner, she provided excellent service during my exam and I was very satisfied with the procedure.

Tanya

Saw Dr. Chirla for the first time and had a great experience from beginning to end. She is a great clinician and very thorough.

Michelle

Blogs

Colon Cancer

The Link Between Alcohol and Colorectal Cancer

Research shows that lifestyle factors — including alcohol consumption — can influence colon cancer risk.

February 26, 2026

Gender

How IBS Affects Men

Understanding these gender-specific patterns can help men recognize male IBS symptoms, manage their condition, and know when to seek help from a healthcare provider.

February 19, 2026

Colitis

How Ulcerative Colitis (UC) Affects Your Body

While many people recognize UC as a digestive disorder, its effects can extend beyond the GI tract, influencing overall health and quality of life.

February 12, 2026

Diet

How a Low FODMAP Diet Helps IBS

While there is no single cure for IBS, dietary management is one of the most effective ways to reduce symptoms.

February 5, 2026

View All Blogs

Your Trusted Team of
Gastroenterologists