Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. James Matthew Diffley, MD

Individual provider Pediatrics Physician · NPI 1780974626

Dr. James Matthew Diffley, MD is a Pediatrics Physician in Oakland, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2011
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

747 52nd St
Oakland, CA 94609-1809
Phone: (510) 842-3938
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence A114288 (CA)

Record details

NPI number1780974626
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 12, 2011
Last updated in NPPESFebruary 11, 2022
Mailing address747 52nd St, Oakland, CA 94609-1809

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