Dr. Glenn Madokoro, MD

Gastroenterology  |  
Male  |  
Age 69
Insurances AcceptedSave
Dr. Glenn Madokoro, MD
Dr. Glenn Madokoro, MD is a gastroenterology doctor who practices in Newport Beach, CA. He is 69 years old and has been practicing for 43 years. Dr. Madokoro is affiliated with Hoag Hospital Newport Beach.

351 Hospital Rd Ste 210

Newport Beach, CA 92663

Contact Information
Dr. Glenn Madokoro, MD

Dr. Glenn Madokoro, MD

Accepted insurance

  • Aetna
  • Blue Cross Blue Shield
  • Cigna

*Please verify this information when scheduling an appointment.

Learn about Dr. Madokoro

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Top Care Areas


See how frequently Dr. Madokoro performs your care needs compared to other doctors.

Gastrointestinal Diseases
very high
more than 99% of peers
Gastroesophageal Reflux Disease (GERD)
very high
more than 95% of peers
Abdominal Disorders
very high
more than 94% of peers

Dr. Madokoro's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

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  • Gastroenterology

Board Certifications

  • Gastroenterology
    Accredited by: American Board of Medical Specialties*
  • Internal Medicine
    Accredited by: American Board of Internal Medicine*

Conditions Treated

  • Abdominal Disorders
  • Abdominal Pain
  • Anemia
  • Autoimmune Diseases
  • Barrett's Esophagus
  • Benign Neoplasm of the Digestive System
  • Benign Tumor
  • Biliary Atresia
  • Blood Disorders
  • Cancer
  • Celiac Disease
  • Cholecystitis and Gallstones
  • Cirrhosis
  • Colorectal Cancer
  • Constipation
  • Crohn's Disease
  • Dehydration
  • Diaphragmatic and-or Hiatal Hernia
  • Diarrhea
  • Diverticulitis, Intestinal
  • Diverticulosis, Intestinal
  • Duodenal Ulcer
  • Duodenitis
  • Dysentery
  • Dysphagia
  • Esophageal Achalasia and Cardiospasm
  • Esophageal Diseases
  • Esophageal Ulcer
  • Esophageal Varices
  • Esophagitis
  • Gallstones
  • Gastric Ulcer
  • Gastritis
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Diseases
  • Gastrointestinal Malabsorption
  • Hemorrhoids
  • Hepatitis B - Immune Response
  • Hernia
  • Ileus
  • Inflammatory Bowel Disease
  • Intestinal Obstruction
  • Malnutrition
  • Nausea
  • Neoplasm of Gastrointestinal Tract
  • Non-Alcoholic Fatty Liver Disease
  • Non-Neonatal Jaundice
  • Noninfectious Gastroenteritis and Colitis
  • Pancreatitis
  • Reflux Esophagitis
  • Stomach Diseases
  • Ulcer
  • Ulcerative Colitis
  • Unexplained Weight Loss
  • Viral Hepatitis
  • Vomiting Disorders


Read More


  • Capsule Endoscopy
  • Colonoscopy
  • Endoscopy
  • Endoscopy (Esophagus, Stomach, Small Intestine)
  • Small Bowel Enteroscopy

Background Check

0 Malpractice Claims

No malpractice history found for California.

0 Sanctions

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

0 Board Actions

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


  • Stanford University
    Undergraduate School | Graduated 1970
  • David Geffen School Of Medicine At UCLA, University Of California, Los Angeles
    Medical School | Graduated 1974
  • University Of California Los Angeles
    Internship Hospital | Completed 1975
  • University Of California Los Angeles
    Residency Hospital | Completed 1977
  • Harbor-Ucla Medical Center
    Fellowship Hospital | Completed 1980

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications
  • KOCE Healthy Orange County, 2009- 2010

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 profile.

Dr. Madokoro's Reviews

Likelihood of recommending Dr. Madokoro to family and friends
based on 23 total reviews (4 with comments)
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 Comments (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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Not Accepting New Patients
Dr. Madokoro accepts 3 insurance carriers
  • Aetna
  • Blue Cross Blue Shield
  • Cigna

*Please verify this information when scheduling an appointment.

Hospitals where Dr. Madokoro has admitting privileges

Hoag Hospital Newport Beach
1 Hoag Dr
Newport Beach, CA 92663
View Hospital Profile