New Jersey’s Trusted Hub of World Class Gastroenterology

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Top Gastroenterologist NJ

The health of your digestive system is critical to your overall well-being and day-to-day quality of life. The efficiency of the digestive system in breaking down food and converting them into the acids and nutrients that are absorbed into the body is often the difference between a healthy, functional body, and one that is plagued with illnesses and conditions. When these systems begin to malfunction, an individual’s health can deteriorate in a variety of ways.

The DaCosta Medical Group is here to help. Our expertly-trained and veteran gastroenterologists have spent decades treating and healing patients suffering from issues with their digestive system. Equipped with the latest in medical technologies and qualified to perform the most trusted treatments, our gastroenterologists at the DaCosta Medical Group are the premiere choice for gastroenterology needs in the New Jersey area.

Wellness is our top priority, for both your mind and body.

Treating Your Health As If It Were Our Own

Gastroenterology Deals with a Variety of Conditions:

Colon Cancer

Celiac Disease

Gallbladder Disease

Irritable Bowel Syndrome (IBS)

Colon Polyps

Inflammatory Bowel Disease


Peptic Ulcers




and More

DaCosta Medical Group: Our Leadership

Theodore A. DaCosta, MD

For the last three decades, Theodore A. DaCosta, MD has practiced and specialized in Gastroenterology and Internal Medicine for patients in and around New Jersey. Dr. DaCosta has honed his skill and talent in diagnosing and treating digestive and gastrointestinal conditions, including hemorrhoids, Crohn’s disease, severe diarrhea, ulcers, acid reflux, irritable bowel syndrome, and more. Dr. DaCosta has won numerous awards for his research and expertise in the Gastroenterology field.

NJTopDocs (2)



Dr. Dacosta was a kind professional. He was very responsive to my fears & reservations. His attention to detail helped to facilitate my surgery that saved my life. No other choice for GI.

Excellent physician with a load of knowledge. On my recent visit with Dr. DaCosta I had the pleasure of meeting one of his students and hear Dr. DaCosta teach him about my diagnosis. Very impressive.

Self-verified patient of Dr. Theodore A Dacosta Jr - Posted on December 27th, 2017

Dr. DaCosta is a great doctor he took his time with me and explained in great detail my diagnosis. He went over all my treatment options and helped me make the best discussion for my health. The staff was great as well!

Self-verified patient of Dr. Theodore A Dacosta Jr - Posted on May 30th, 2017

Gastroenterology 101: What Is Gastroenterology?

When you feel a rumble in your stomach unrelated to hunger.

One of the most important systems in the body is the digestive system, which is composed of the gastrointestinal organs. These organs all play a part in the proper digestion and absorption of food—from the mouth, down the esophagus, into the stomach, and the organs that work with the stomach to process the food, including the liver, gallbladder, large and small intestine, and finally the expulsion of food from the rectum and anus.

Together, these organs turn food into simpler pieces that the body can absorb: carbohydrates into simple sugars, fats into glycerol and acids, and proteins into amino acids. From there, the body takes in the nutrients and converts these into energy.

But with so many organs playing a part in this process, a number of conditions can affect the effectiveness and functionality of an individual’s digestive tract. A single issue can lead to the breakdown of a highly complex internal system, leading to anything from the smallest hiccup to the most serious medical conditions.

This is the goal of gastroenterology: identifying, diagnosing, and treating the problems clogging up the body’s digestion.

Signs That You Need to Visit a Gastroenterologist

Pain in the chest, stomach, bowels, and the surrounding areas could be the first signs that you need a stomach specialist.

It can be difficult to tell when you need to see a gastroenterologist instead of your regular primary care physician. If you feel the following symptoms or related symptoms, then it might be time to call the DaCosta Medical Group:

  • Acid Reflux
  • Feeling of Bloating
  • Pale or Bloody Stool
  • Uncontrollable Gassiness
  • Irregular Bowel Movements
  • Yellow (or Darker) Urine
  • Long-Term Fatigue
  • Diarrhea
  • Pain in the Esophagus
  • Excessive Heartburn
  • Stomach Pain or Vomiting
  • Lack of Appetite; Weight Loss

Feeling Discomfort? Call Now – Don’t Wait

When do you move from a primary care physician to a stomach specialist?

There are many cases where an individual or a family will choose to simply deal with any of the symptoms listed above, and will only visit a doctor if the issue becomes overwhelmingly serious. However, the gastrointestinal tract is a system of the body that requires immediate attention, especially if a condition outside of the normal stomach ache is present.

Waiting until serious symptoms arrive can lead to long-term damage to your health and gastrointestinal organs. Early diagnosis is key towards achieving the highest success rate of defeating a stomach condition. If you or your family member is experiencing any of the symptoms listed above, it is highly recommended that you book an appointment with your nearest and most trusted gastroenterologist center as soon as possible. We will work with your primary care physician to provide the most thorough care achievable.

Screenings, Procedures, and Tests: What a Gastroenterologist Offers

At the DaCosta Medical Group, we are equipped with advanced medical technologies that primary care facilities do not have. This allows us to perform the tests and screenings that most accurately identify gastrointestinal and related conditions. These procedures include:


Patients 45 years and older are recommended to undergo a colonoscopy, which is the test used to diagnose any potential or present colorectal cancer. This procedure involves the use of an endoscope that is gently inserted inside the patient, allowing a visual live-viewing from within the colon.

Upper Endoscopy

Difficulties with swallowing, vomiting, excessive heartburn, and unusual abdominal pain can be caused by a number of gastrointestinal related conditions, so physicians will perform an upper endoscopy (EGD) procedure to more closely diagnose the problem. This procedure involves the insertion of an endoscope inside the esophagus, allowing clearer vision of the upper GI tract.

Capsule Endoscopy

Similar to the upper endoscopy procedure, the capsule endoscopy provides physicians with visual images from inside the patient’s digestive system. However, instead of using an endoscope, a patient is provided a capsule to swallow, which will then release a small camera inside the body.

Esophageal Manometry

This procedure is used when a patient has problems related to swallowing. This requires little to no procedure preparation.

Hemorrhoid Ablation

Hemorrhoids can be healed with this procedure, which uses infrared light that is focused on the swollen hemorrhoid. This engages and boosts the natural healing process in the area.

You and Your Gastroenterologist: Diagnosis and Treatments

After you have been diagnosed by a gastroenterologist with a chronic digestive condition, you are expected to be present for your regular treatments. If your condition worsens unexpectedly, your first priority should be contacting your gastroenterologist as soon as possible. This will allow us to provide you with the best treatment we can.

Treating Your Health As If It Were Our Own

Frequently Asked Questions: Knowing Gastroenterology

Will a Gastroenterologist ever perform a surgery
on a patient?

No. A gastroenterologist will never put a patient under the knife; they will only do endoscopic procedures. If surgery is necessary, a gastroenterologist can work with surgeons and surgery centers.

What is the purpose of a gastroenterologist?

A gastroenterologist is a specialist that will help you with conditions related to your digestive system—this includes abdominal pain, heartburn, diarrhea, nausea, and more.

Can I prevent Colon Cancer?

Yes. Colon cancer begins with polyps, which are tiny growths along your colon. A gastroenterologist will perform a colonoscopy (colon cancer screenings) and detect and remove these polyps before they develop into colon cancer.

Where can I get my medical records to show my gastroenterologist?

Speak to your current physician(s) and inform them of your choice of specialist. They will send your medical records to your gastroenterologist.

What can I expect after I undergo a GI procedure?

You will spend the day shaking off the sedatives, so expect to have your reflexes and judgment slightly impaired until the next day. You are allowed to eat (unless instructed otherwise), but you might feel some bloating in your stomach, which is the result of air sliding into your colon during the procedure. Make sure that you have someone with you to drive you home, as you will be too groggy to drive safely.

Do you have a patient portal where I can see more information and available patient forms?

Of course. Just check out this page.


Book an Appointment with the Top Gastroenterology Practice in New Jersey Today!

Serving Central and Northern New Jersey