Guillermo Mendoza, MD
NPI 1306998521 · Allergy & Immunology Physician · Vacaville, CA
Guillermo Mendoza, MD is a Allergy & Immunology Physician provider in Vacaville, CA (NPI 1306998521).
Provider details
- NPI number
- 1306998521
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G26365 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-17
- Last updated
- 2008-09-09
Frequently asked questions
- What is Guillermo Mendoza's NPI number?
- Guillermo Mendoza's National Provider Identifier (NPI) is 1306998521, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guillermo Mendoza's specialty?
- Guillermo Mendoza is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Guillermo Mendoza located?
- Guillermo Mendoza's practice location on file with NPPES is 1 Quality Dr, Vacaville, CA 95688-9494.
- What is Guillermo Mendoza's phone number?
- The practice phone number listed in the NPPES registry for Guillermo Mendoza is (707) 453-5000.
- Is Guillermo Mendoza's NPI active?
- Yes — Guillermo Mendoza's NPI (1306998521) is active in the NPPES registry as of the last update on 2008-09-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.