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

Dr. Guillermo Diaz Jr., MD

Individual provider Pediatrics Physician · NPI 1134161144

Dr. Guillermo Diaz Jr., MD is a Pediatrics Physician in Los Angeles, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

2829 S Grand Ave
Los Angeles, CA 90007-3304
Phone: (213) 699-7000
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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 A86465 (CA)

Record details

NPI number1134161144
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 12, 2006
Last updated in NPPESApril 30, 2021
Certification dateApril 30, 2021

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