Dr. Edward Onuma, MD

Dr. Edward Onuma, MD

Gastroenterology  ·  
Male  ·  
Age 59
(5)
Save
Dr. Edward Onuma, MD is a gastroenterology specialist in San Mateo, CA and has been practicing for 20 years. He graduated from SUNY Upstate Medical University in 1990 and specializes in gastroenterology and internal medicine.

100 S Ellsworth Ave Ste 507

San Mateo, CA 94401

Contact Information

Insurance Accepted

  • Aetna
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of California
  • Blue Shield of California
  • Chinese Community Health Plan (CCHP)
  • MultiPlan
  • Western Health Advantage

*Please verify this information when scheduling an appointment.

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
Learn more about background checks

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
Cholecystitis and Gallstones
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
Hernia
Ileus
Indigestion
Inflammatory Bowel Disease
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
Reflux Esophagitis
Small Intestine Cancer
Stomach and Small Intestine Cancer
Stomach Cancer
Stomach Diseases
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 20 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
    1998
  • 1995
    Robert Wood Johnson Med School
    Residency Hospital
    1995
  • 1991
    St. Vincent’s Hospital
    Internship Hospital
    1991
  • 1990
    SUNY Upstate Medical University
    Medical School
    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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Dr. Onuma?
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Average 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 !!!...Read More
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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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Locations

Insurance accepted

Accepted insurance can change. Please double-check when making an appointment.

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