What Is a Gastroenterologist? What to Expect on a Visit

Are you about to see a gastroenterologist for the first time? You’re in good hands. Because they specialize in digestive diseases, gastroenterologists treat lots of people who have symptoms just like yours.

What Is a Gastroenterologist?

Gastroenterologists are internists (doctors trained in internal medicine).

They complete up to 6 more years of specialized training after medical school. These doctors study the digestive system and any diseases that affect your esophagus, stomach, gallbladder, pancreas, liver, intestines, colon, and rectum, like these:

Your first appointment with your gastroenterologist will probably take 30-60 minutes. They’ll ask you about your symptoms, medical history, and any treatments you’ve tried. Other visits could be shorter.

Where Do Gastroenterologists Work?

Gastroenterologists may see patients in a hospital or an outpatient clinic. They aren’t surgeons, but they do tests, like a colonoscopy or endoscopy, at both of these places.

Your primary care doctor or family doctor may send you to a gastroenterologist. And you might need a referral from that doctor for insurance to cover the cost of your visit.

What Questions Will My Gastroenterologist Ask?

First, your nurse will check your blood pressure and heart rate, and ask you questions about your health. Tell them what medicines you take or if you have any allergies.

Your gastroenterologist should ask you more detailed questions like these:

  • What are your symptoms?
  • Where is your pain?
  • How long does your pain usually last?
  • Does your pain move around or change?
  • When did your symptoms start?
  • Do your symptoms get worse or better at certain times?
  • Does anything seem to trigger your symptoms?
  • Has anyone in your family had digestive diseases or other health problems?
  • Have you had any other illnesses or surgery before?

Some questions may not seem to have anything to do with your digestive problem. But symptoms in other parts of your body can help the gastroenterologist make the right diagnosis.

You might want to make a list of your symptoms before you see the gastroenterologist. Bring it with you so you don’t forget anything.


Questions to Ask Your Gastroenterologist

You should ask questions, too. Here are a few you can try:

  • Will I need any more tests?
  • What are the usual treatments for my condition?
  • Will I need a colonoscopy or endoscopy?
  • What do I do if I have a symptom flare-up before I see you again?
  • What are the signs of a serious complication?
  • Are there any medications that could make my problem worse?
  • Will I need to change my diet?

Your Physical Exam

The gastroenterologist will look at you to try to find the cause of your symptoms. You’ll lie on the exam table and relax. Your doctor will press down on the skin around your belly. They’ll listen for odd bowel sounds and feel for any masses or tenderness. They may ask you to take deep breaths or cough during your exam.

They might also put a finger into your rectum to feel for any bulges or masses, and to check the muscle tone.

What Are the Next Steps?

The gastroenterologist may send you for X-rays, a CT scan, or blood and stool tests. They may also test your motility (how food moves through your digestive system).

The doctor might also suggest procedures to diagnose your problem. They’ll schedule these tests for later and tell you how to prepare:

Barium swallow or enema: Barium is a liquid that highlights areas inside your body on a scan. The doctor may give you barium to drink to check your esophagus, stomach, or upper small intestine. Or you may need one to check your colon or rectum. An X-ray will show the doctor your organs as they move.

Endoscopy: This long, thin tube with a tiny camera on the end goes through your mouth so the doctor can look at your upper digestive tract or take a biopsy (tissue sample).

Colonoscopy: The doctor puts a thin scope with a camera on the end into your bottom. It goes into your colon, rectum, or large intestine to look for polyps or bleeding, get rid of any polyps, or take a biopsy.



Your gastroenterologist may suggest over-the-counter antacids, or prescribe medications to treat your heartburn, gas, constipation, or other symptoms. They often prescribe proton pump inhibitors, H2 blockers, or metoclopramide, which helps with motility.

Lifestyle Changes

Your gastroenterologist may tell you to do these things to manage your symptoms:

  • Cut back on caffeine.
  • Don’t eat foods that trigger symptoms.
  • Eat more fiber.
  • Exercise regularly.
  • Find ways to manage your stress.
  • Poop when you have the urge.

What You Can Do to Help

Follow your gastroenterologist’s lifestyle tips to feel better, and get regular colon screenings to spot early signs of cancer.

Let the doctor know if you have blood in your stool, changes to your bowel movements, fatigue, or weight loss you can’t explain.

WebMD Medical Reference Reviewed by Minesh Khatri, MD on July 11, 2019



American College of Gastroenterology: “What Is a Gastroenterologist?”

Johns Hopkins Medicine: “Gastrointestinal, Liver, and Pancreatic Diseases and Conditions.”

University of North Carolina School of Medicine: “Frequently Asked Questions.”

HealthCare.gov: “Referral.”

Walker, H.K., Hall, W.D., and Hurst, J.W. Clinical Methods: The History, Physical, and Laboratory Examinations, 3rd Edition, Butterworths, 1990.

GI Society/Canadian Society of Intestinal Research: “Making the Most of a Visit to Your Doctor.”

Mayo Clinic: “10 IBD questions to ask at your next appointment.”

University of Rochester Medical Center: “Barium Swallow,” “Barium Enema.”

Dana-Farber Cancer Institute: “Understanding upper endoscopy and colonoscopy.”

Johns Hopkins Medicine: “Gastrointestinal Medications.”

Cleveland Clinic: “Gastrointestinal Disorders.”

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