Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Edward K Onuma, MD, PHD

Individual provider Specialist · NPI 1477559722

Dr. Edward K Onuma, MD, PHD is a Gastroenterology in San Mateo, California. Graduated from State University of Ny Upstate Medical University in 1990, 36 years ago. Practices with Peninsula Gastrointestinal, a 3-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
36
Trained at
State University of Ny Upstate Medical University
Licensed in
CA
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

100 S Ellsworth Ave Ste 507
San Mateo, CA 94401-2708
Phone: (650) 342-7432
Fax: (650) 342-3239
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence 00G855080 (CA)

Record details

NPI number1477559722
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedJune 22, 2005
Last updated in NPPESFebruary 21, 2008

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolSTATE UNIVERSITY OF NY UPSTATE MEDICAL UNIVERSITY
Graduated 1990 (36 years in practice)
Group practice Peninsula Gastrointestinal — 3 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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