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Dr. Edward Onuma, MD

Dr. Edward Onuma, MD

Age 61 Gastroenterology M
(5) 5 reviews

Telehealth available

Accepting New Patients


Dr. Edward Onuma, MD is a gastroenterology specialist in San Mateo, CA. Dr. Onuma completed a residency at Robert Wood Johnson University Hospital. He currently practices at Peninsula Gastrointestinal Specialists and is affiliated with Mills-Peninsula Medical Center. He accepts multiple insurance plans. Dr. Onuma is board certified in Gastroenterology.


  • Robert Wood Johnson University Hospital, Fellowship Hospital
  • Robert Wood Johnson University Hospital, Residency Hospital — 1995
  • Robert Wood Johnson University Hospital, Internship Hospital — 1993
  • St Vincent's Hosp & Med Ctr, Residency Hospital — 1992
  • New York State U, College of Medicine - Upstate, Medical School — 1990

Insurance Accepted

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

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  1. Peninsula Gastrointestinal Specialists

    1. 1
      San Mateo
      100 S Ellsworth Ave Ste 507, San Mateo, CA 94401 Existing Patients: (650) 342-7432

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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%.
Sonia — Mar 16, 2018
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Dr. Edward Onuma, MD
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Frequently Asked Questions

Dr. Onuma frequently treats Pancreatic Disease.  

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Hospital Affiliations

  • Mills-Peninsula Medical Center