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

Guillermo R. Mendoza, MD

Individual provider Allergy & Immunology Physician · NPI 1306998521

Guillermo R. Mendoza, MD is an Allergy & Immunology Physician in Vacaville, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
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

1 Quality Dr
Vacaville, CA 95688-9494
Phone: (707) 453-5000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence G26365 (CA)

Record details

NPI number1306998521
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 17, 2007
Last updated in NPPESSeptember 9, 2008
Mailing address1800 Harrison St Fl 7, Oakland, CA 94612-3429

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