• What You Should Know About an Endoscopy
    Endoscopies offer a minimally invasive way to diagnose conditions and diseases that can affect the upper part of your gastrointestinal tract. Newport Beach, CA, gastroenterologist Dr. Glenn Madokoro shares a Read more
  • What Are Polyps?
    Are you suffering from polyps? Dr. Glenn Madokoro, your Newport Beach, CA, gastroenterologist, is an expert when it comes to detecting polyps so if you're in need of a colonoscopy, here Read more
  • What Happens During a Follow-Up Colonoscopy?
    If you're age 50 or older, you know that a screening colonoscopy appears on your "to do" list. If your heredity and current health status indicate you're at low risk for Read more
  • Types of Endoscopy Procedures
    For individuals experiencing abdominal pain, difficulty swallowing, nausea or vomiting, our gastroenterologist, Dr. Glenn Madokoro in Newport Beach, CA, can perform a variety of endoscopy procedures to diagnose your symptoms. Read more
  • What Is Capsule Endoscopy?
    A capsule endoscopy is a procedure allowing gastroenterologists to view and examine the interior middle portion of the gastrointestinal tract. This area of the gastrointestinal tract includes three sections of Read more
  • What Services Your Gastroenerologist Provides
    Stomach issues can prove to quickly affect your quality of life and cause more trouble than one would think. However, your gastroenterologist can help you find answers to your stomach Read more
  • 5 Digestive Diseases You Should Be Aware Of
    Tummy troubles? Digestive diseases significantly affect millions of individuals worldwide. There’s no need to suffer in silence. If you suspect you could have one of the following digestive diseases, don't Read more
  • Reasons You May Need an Endoscopy
    Having GI distress? Then find out if an endoscopy could give you the answers to your stomach issues. There are many symptoms that may warrant a trip to see our Newport Read more
  • Signs You May Have Crohn's Disease
    Crohn's disease is an inflammatory bowel disease that causes pain, severe diarrhea, and other serious symptoms. Glenn D. Madokoro, M.D., your Newport Beach, CA gastroenterologist, shares some signs that may Read more
  • Signs You May Need A Colonoscopy
    A colonoscopy might not be on the top of your priority list. However, this procedure is an incredibly important tool for preventing and diagnosing colon cancer, which affects about 150,000 Read more
  • Colorectal Cancer Prevention Doesn't Have to be Uncomfortable
    Find out more about colorectal cancer screenings and who should get them. Are you turning 50 years old this year? If so, it might be time to give yourself the gift Read more
  • FAQs About An Endoscopy
    If you live in the Newport Beach, CA area, and you have been told you need an endoscopy, chances are you have questions and concerns. A qualified gastroenterologist, like Dr. Glenn Read more
  • What Happens During a Colonoscopy?
    A colonoscopy is a test used to examine your large intestine for signs of cancer and find the cause of other problems, such as abdominal pain. Initial colonoscopies are recommended Read more
  • FAQs About Polyps
    Polyps are a small cluster of cells that grow on the lining of the colon. Most polyps tend to be harmless, and generally don’t cause noticeable symptoms. However, some polyps Read more
  • Why Might I Need a Colonoscopy?
    Has your Newport Beach, CA doctor, Glenn D. Madokoro, MD, talked to you about having a colonoscopy yet? A common medical procedure, colonoscopies are used to screen for signs of Read more
  • Brock Lesnar Knows the Dangers of Diverticulitis
    Diverticulitis is an unfortunately common and painful disease of the digestive system. It occurs when pouches formed in the intestines and colon become inflamed. Symptoms include abdominal pain, diarrhea, Read more

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Our Location

July 1, 2022-we have moved to 2901 W Cst Hwy ste 200, Newp Bch

Office Hours


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8:30 am-12:00 pm


8:30 am-12:00 pm