Welcome to Our Gastroenterology Site!

Due to the COVID-19 outbreak the CDC currently recommends that routine office visits not be scheduled. Instead of traditional office visits we are pleased to offer you "Televisits" via the ZOOM app. Please contact my staff if you would like to arrange such a visit.

Gastroenterologist Newport Beach, CA

Glenn D Madokoro, MD welcomes you!
At Glenn D Madokoro, MD, we believe that each patient and doctor become a team for treating an individual's digestive problems. Our Newport Beach gastroenterologists spend most of their time listening to understand your concerns and responding with the best treatment options for you. With the help of our professional staff, they also follow up to make sure that problems are resolved and your health improves.

We want our patients to be informed about their digestive problems and treatments, because informed patients make better decisions about their health and well being. That is why we've included a section on this website covering common topics associated with gastroenterlology and endoscopic procedures.  We offer procedures that deal with screening colonoscopy, colonoscopy, and endoscopy.  We encourage you to look through these pages whenever you have an interest or concern related to your digestive health.

new portWe also know that convenience is important to your selection of a gastroenterologist in Newport Beach. In these web pages you'll find information about Glenn D Madokoro, MD's office, including our location, maps, directions, hours, insurance policies and appointment scheduling. Please feel free to contact us with any questions you have or to request an appointment. We hope you find our practice offers the accessibility and personal commitment you look for from a gastroenterologist in Newport Beach.

Meet the Doctor

  • Glenn D. Madokoro, M.D., FACG

    Dr. Madokoro welcomes you to this site and hopes it provides you with the information you need to make a thoughtful decision about your care.

    Dr. Madokoro majored in chemistry at Stanford, where he was elected to Phi Beta Kappa and graduated with great distinction. He received all his post-graduate training at UCLA, including attending medical school, and training as an intern, resident, and fellow.

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Featured Articles

Read about helpful topics

  • Understanding Bowel Preparation

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

    Read More
  • Understanding Colon Polyps and Their Treatment

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

    Read More
  • Understanding Gastroesophageal Reflux Disease

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

    Read More
  • Understanding Barrett's Esophagus

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

    Read More
  • Understanding Minor Rectal Bleeding

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

    Read More
  • Understanding Esophageal Testing or Manometry

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

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  • Understanding Diverticulosis

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

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  • Understanding Percutaneous Endoscopic Gastrostomy

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

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  • Understanding Esophageal Dilation

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

    Read More
  • Understanding Flexible Sigmoidoscopy

    This information was developed by the Publications Committee of the American Society for Gastrointestinal Endoscopy (ASGE). For more information about ASGE, visit www.asge.org. This information is intended only to provide general guidance. It does not provide definitive medical advice. It is important ...

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Contact Us

Send us an email if you have any interests or concerns

Our Location

Office Hours

Monday:

8:30 am-12:30 pm

Tuesday:

8:30 am-3:00 pm

Wednesday:

Closed

Thursday:

8:30 am-12:00 pm

Friday:

8:30 am-12:00 pm

Saturday:

Closed

Sunday:

Closed