Browse Health
Internist, Gastroenterologist (digestive)
22 years of experience
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Edward Onuma:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

View full profile

Patient Reviews

Patient comments (0)

The overall average patient rating of Dr. Edward Onuma is Excellent. Dr. Onuma has been reviewed by 2 patients who have provided 0 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Promptness 5.0
Courteous Staff 5.0
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. Edward Onuma, MD, PHD is board certified in Internal Medicine and Gastroenterology.

  • He has special expertise in 8 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Cataract
  • Constipation
  • Diabetes
  • Glaucoma
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Education & Awards

Dr. Onuma graduated from Upstate Medical University Physical Medicine and Rehabilitation, Syracuse.


Dr. Onuma has 7 hospital affiliations:

  • Mills-Peninsula Health Services 
  • Sequoia Hospital 


  • English
  • Japanese

> > > > Dr. Edward Onuma, MD, PHD

Similar doctors nearby

Dr. Andrew Engler

Internal Medicine
30 years experience
San Mateo, CA

Dr. Harold Hopper

Internal Medicine
San Mateo, CA

Dr. Anu Reddy

Internal Medicine
20 years experience
San Mateo, CA

Dr. John Chow

Internal Medicine
21 years experience
San Mateo, CA

Dr. Dale Ritzo

Internal Medicine
30 years experience
San Mateo, CA

Dr. Mary Dobbins

Internal Medicine
38 years experience
San Mateo, CA
Search All Similar Doctors
Additional Information
Dr. Edward K Onuma MD and PHD is a male Internist, has 22 years of experience and practices in Internal Medicine and Gastroenterology.
Where does Dr. Edward K. Onuma practice?
Dr. Edward Onuma has 1 office location.
Dr. Edward Onuma practices Internal Medicine and Gastroenterology near San Mateo, CA.
See San Mateo Internists and San Mateo Gastroenterologists.