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Dr. Edward K. Onuma, MD


Dr. Onuma's Overview

Dr. Edward K. Onuma graduated from the SUNY Upstate Medical University in 1990. He works in San Mateo, CA and specializes in Gastroenterology and Hepatology. Dr. Onuma is affiliated with Mills Peninsula Health Services.

Dr. Onuma's Experience

Years in Practice: 25

Dr. Onuma's Specialties

Gastroenterology, Hepatology

Dr. Onuma's Education & Training

Medical School: SUNY Upstate Medical University; Graduated 1990

Dr. Onuma's Rating

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Overall Rating


  • Explains conditions & treatments
  • Takes time to answer my questions
  • Provides follow-up as needed
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Dr. Onuma's Accepted Insurance

  • Aetna Basic HMO
  • Aetna Choice POS II
  • Aetna HMO
  • Aetna HMO Deductible Plan CA members only
  • Aetna Managed Choice POS Open Access
  • Aetna Savings Plus of CA
  • Aetna Signature Administrators PPO
  • Aetna Vitalidad Plus CA con Aetna
  • BCBS Blue Card PPO
  • Blue Cross CA Advantage PPO Preferred DirectAccess Plus
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Dr. Onuma's Office Information & Appointments

Office Locations

Peninsula Gastroenterology-Intestinal Specialists Inc

100 S Ellsworth Ave Ste 507
San Mateo, CA 94401
(650) 342-7432


Office Hours and Information

Fax: (650) 342-3239

Practice Website: Not Available

Accepting New Patients: Yes

Medicare Accepted: Yes

Medicaid Accepted: No

Monday 9:00 AM - 4:30 PM
Tuesday 9:00 AM - 4:30 PM
Wednesday 9:00 AM - 4:30 PM
Thursday 9:00 AM - 4:30 PM
Friday 9:00 AM - 4:30 PM
Saturday Closed
Sunday Closed

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Dr. Onuma's Hospital Affiliations

Office Locations

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