Dr. Glenn Madokoro, MD
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Dr. Glenn Madokoro, MD


Gastroenterology | Male

Glenn D Madokoro MD 351 Hospital Rd Ste 210 Newport Beach, CA 92663 Get Directions


Dr. Glenn Madokoro, MD is a gastroenterology doctor who practices in Newport Beach, CA. He is 68 years old and has been practicing for 43 years. Dr. Madokoro is affiliated with Hoag Hospital Newport Beach.

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Dr. Madokoro's Experience

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Board Certifications

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Memberships & Professional Affiliations

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Visiting Dr. Madokoro

Dr. Madokoro accepts 3 insurance carriers

Affiliated Hospitals

Hospital Quality
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Dr. Madokoro's Reviews

Likelihood of recommending Dr. Madokoro to family and friends
based on 23 total surveys (4 with reviews)
Dr. Madokoro's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers Questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
  • Average wait time
    Under 10 minutes
Patient Reviews (4)
in Irvine, CA |
2 yrs ago, I learned of a friend recovering from stage 4 colon cancer. I was 53 years old and had never had a colonoscopy. That was my wake up call. I got a referral and went to see this Doc. I didn't know what a gem he was until I learned that he spends ~double the amount of time doing this procedure as most Docs do. Please note:The ability to find and remove polyps and other issues in the colon is directly related to the amount of time spent looking. His office personnel were great too.
in Laguna Beach, ca |
I would give him 6 stars if I could! I did some online research and found Dr. Madokoro for my fiancé. We are both in the medical field so had some knowledge on what to look for. Dr. Madokoro really cares about his patients and took the time to explain everything and do a thorough job. I have taken both of my parents in for colonoscopy and they were in a huge lines of patients and the exam was very short. Dr. Madokoro took the time to care for us and made sure he didn't miss anything. He cares!
in Costa Mesa, Ca |
Very thorough. Dr Madakoro is gentle and kind. He cares about us as patients and as people. His entire staff is kind and gentle with patients and family. The staff explains all instructions for procedures very carefully and makes sure we understand everything. Should you need to call in, they are extremely friendly and mind. I recommend dr Madakoro to everyone. Otis definitely a kind and gentle office
in Newport Beach, CA |
Outstanding! Paramount: Dr. Madokoro spent 40 total minutes examining my colon during a routine colonoscopy. As a sense of perspective, in a recent New England Journal of Medicine study, the range of gastroenterologists time was a low of 3 minutes and a high of 16 minutes. That's right, Dr. Madokoro spent 2.5 times more time than the highest doctor in the study!! Since finding polyps is a function of time spent, nothing is more important. This simple fact makes him in a league of his own!
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Dr. Madokoro's experience matches your search based on the following criteria:

  •  Based on total number of patients treated over the last 12 months
  •  Specializes in Gastroenterology
  •  Board certified in Gastroenterology and Internal Medicine
  •  No malpractice claims found
  •  No sanctions found
  •  No board actions found

Awards & Recognition

  • Awards & Honors
    • Healthgrades Honor Roll
    What is a recognized doctor
  • Media & Publications
    • KOCE Healthy Orange County, 2009- 2010

Background Check

  • 0
    Malpractice Claims

    No malpractice history found for California.

    What is medical malpractice
  • 0

    No sanctions history found for the years that Healthgrades collects data.

    What is a sanction or disciplinary action
  • 0
    Board Actions

    No board actions found for the years that Healthgrades collects data.

    What are board actions

Board Certifications

Why It Matters: Dr. Madokoro's Board Certifications

Board certification should be one of your top considerations when choosing a doctor. Board certification is an official recognition given to doctors who have met specific requirements set by national medical specialty boards in the... More

  • Gastroenterology
  • Internal Medicine

Conditions Treated

  • Abdominal Disorders
  • Abdominal Pain
  • Anemia
  • Barrett's Esophagus
  • Benign Neoplasm of the Digestive System
  • Benign Tumor
  • Blood Disorders
  • Cancer
  • Cholecystitis and Gallstones
  • Cirrhosis
  • Colorectal Cancer
  • Crohn's Disease
  • Diaphragmatic and-or Hiatal Hernia
  • Diarrhea
  • Diverticulitis, Intestinal
  • Diverticulosis, Intestinal
  • Duodenitis
  • Dysentery
  • Dysphagia
  • Esophageal Diseases
  • Esophageal Diverticulum
  • Esophageal Ulcer
  • Esophageal Varices
  • Esophagitis
  • Gastric Ulcer
  • Gastritis
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Diseases
  • Hemorrhoids
  • Hepatitis B - Immune Response
  • Hernia
  • Ileus
  • Inflammatory Bowel Disease
  • Intestinal Obstruction
  • Irritable Bowel Syndrome
  • Non-Alcoholic Fatty Liver Disease
  • Noninfectious Gastroenteritis and Colitis
  • Pancreatitis
  • Peptic Ulcer
  • Pyloric Stenosis
  • Stomach Diseases
  • Ulcer
  • Ulcerative Colitis
  • Unexplained Weight Loss
  • Vascular Insufficiency of Intestines
  • Vomiting Disorders


  • Medical School
    David Geffen School Of Medicine At UCLA, University Of California, Los Angeles

    Graduated in 1974

  • Internship Hospital
    University Of California Los Angeles

    Completed in 1975

  • Residency Hospital
    University Of California Los Angeles

    Completed in 1977

  • Fellowship Hospital
    Harbor-Ucla Medical Center

    Completed in 1980

  • Undergraduate School
    Stanford University

    Graduated in 1970

Languages Spoken

  • English

Memberships &
Professional Affiliations

Dr. Madokoro does not have any memberships or affiliations listed. If you are Dr. Madokoro and would like to add memberships or affiliations, please update your free profile.


  • Gastroenterology

Procedures Performed

  • Colonoscopy
  • Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
  • Endoscopy
  • Endoscopy (Esophagus, Stomach, Small Intestine)
  • Gastroenterology Procedures