Accepting new patients

Dr. Edward Onuma, MD

Gastroenterology ·  Male · Age 60

Dr. Onuma

Peninsula Gastrointestinal Specialists

100 S Ellsworth Ave Ste 507 San Mateo, CA 94401

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Dr. Edward Onuma, MD is a gastroenterology specialist in San Mateo, CA and has been practicing for 21 years. He graduated from SUNY Upstate Medical University in 1990 and specializes in gastroenterology and internal medicine.


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Dr. Onuma accepts

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(650) 342-7432

Dr. Onuma accepts the following insurance:

Aetna
Aetna HMO
Choice Plus POS II
Blue Cross Blue Shield
Blue Card PPO
Blue Cross Blue Shield of California
Advantage Preferred DirectAccess Plus PPO
Blue Cross Blue Shield of California PPO
Select Plus HMO
Select PPO
Blue Shield of California
Access Plus Savenet
Local Access Plus HMO
Chinese Community Health Plan (CCHP)
MultiPlan
MultiPlan PPO
PHCS Network PPO
Western Health Advantage

Background Check

No malpractice claims found for California
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
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Experience Check

Check Dr. Onuma's experience treating your condition or procedure

Dr. Onuma's Top Procedures and Conditions

Treatment Frequency
Diarrhea
very high
very high

Treatment Frequency

Dr. Onuma treats Diarrhea more than 100% of his peers

Dr. Onuma treats this condition more than 100% of his peers

Abdominal Pain
very high
very high

Treatment Frequency

Dr. Onuma treats Abdominal Pain more than 100% of his peers

Dr. Onuma treats this condition more than 100% of his peers

Abdominal Disorders
very high
very high

Treatment Frequency

Dr. Onuma treats Abdominal Disorders more than 100% of his peers

Dr. Onuma treats this condition more than 100% of his peers

Dr. Onuma's conditions and procedures:

  • Abdominal Disorders
  • Abdominal Pain
  • Anal or Rectal 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
  • Cholelithiasis
  • Cirrhosis
  • Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
  • Colorectal Cancer
  • Constipation
  • Crohn's Disease
  • Dehydration
  • Diaphragmatic and-or Hiatal Hernia
  • Diarrhea
  • Diverticulitis, Intestinal
  • Diverticulosis, Intestinal
  • Duodenal Ulcer
  • Duodenitis
  • Dysentery
  • Dysphagia
  • Endoscopy (Esophagus, Stomach, Small Intestine)
  • Enteritis
  • Esophageal Achalasia and Cardiospasm
  • Esophageal Cancer
  • Esophageal Diseases
  • Esophageal Diverticulum
  • Esophageal Ulcer
  • Esophageal Varices
  • Esophagitis
  • Gas-Bloat Syndrome
  • Gastric Ulcer
  • Gastritis
  • Gastroenterology Procedures
  • Gastroesophageal Reflux Disease (GERD)
  • Gastrointestinal Bleeding
  • Gastrointestinal Diseases
  • Gastrointestinal Malabsorption
  • Gastroparesis
  • Heartburn
  • Hemochromatosis
  • Hemorrhoids
  • Hepatitis B - Immune Response
  • Hepatitis C
  • Hepatorenal Syndrome
  • Hernia
  • Ileus
  • Indigestion
  • Inflammatory Bowel Disease
  • Intestinal Ischemia
  • Intestinal Obstruction
  • Irritable Bowel Syndrome
  • Liver Biopsy
  • Liver Damage from Alcohol
  • Malnutrition
  • Megacolon
  • Nausea
  • Neoplasm of Gastrointestinal Tract
  • Non-Alcoholic Fatty Liver Disease
  • Noninfectious Gastroenteritis and Colitis
  • Non-Neonatal Jaundice
  • Pancreatitis
  • Peptic Ulcer
  • Pyloric Stenosis
  • Reflux Esophagitis
  • Small Intestine Cancer
  • Stomach and Small Intestine Cancer
  • Stomach Cancer
  • Stomach Diseases
  • Stomal Ulcer
  • Ulcer
  • Ulcerative Colitis
  • Unexplained Weight Loss
  • Viral Enteritis
  • Viral Hepatitis
  • Vomiting Disorders

About Me

Biography

Dr. Edward Onuma, MD is a gastroenterology specialist in San Mateo, CA and has been practicing for 21 years. He graduated from SUNY Upstate Medical University in 1990 and specializes in gastroenterology and internal medicine.

Specialties

  • Gastroenterology
  • Internal Medicine

Board Certifications

  • Gastroenterology
  • Internal Medicine

Education

1998
Robert Wood Johnson Med School
Fellowship Hospital
1995
Robert Wood Johnson Med School
Residency Hospital
1991
St. Vincent’s Hospital
Internship Hospital
1990
SUNY Upstate Medical University
Medical School
1998
1995
1991
1990

Languages

  • Japanese
  • English

Awards

Dr. Onuma's Reviews

Likelihood to recommend Dr. Onuma

4.2

Based on 5 reviews

5 Stars
80%
(4)
4 Stars
0%
(0)
3 Stars
0%
(0)
2 Stars
0%
(0)
1 Star
20%
(1)

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Average Reported Wait Time
  • 16 – 30 minutes
Dr. Onuma's Performance
  • Trustworthiness
  • Explains condition(s) well
  • Answers questions
  • Time well spent
Office & Staff Performance
  • Scheduling
  • Office environment
  • Staff friendliness
What People Say About Dr. Edward Onuma, MD
Reply
Dr Onuma is my second opinion dr He is very kind and concerned about all your health conditions.He knows how to explain, listen and speaks to his patient. To me having others medical conditions and being treated for different specialists . The main key for a good dr is having all good !!! Mentioned above !!! That I was missing from my previous Gastrentologist . Excellent and I will recommend him 100%.
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Dr. Onuma is a fantastic doctor! He takes the time to listen to you and your concerns. He also takes the time to get to know you. He is great at returning calls if you have a concern or need anything. I am so grateful that I found him!
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