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Dr. Guillermo R. Mendoza, MD

Allergy & Immunology

Dr. Mendoza's Overview

Dr. Guillermo R. Mendoza graduated from the University of California, San Diego School of Medicine in 1972. He works in Vacaville, CA and specializes in Allergy & Immunology. Dr. Mendoza is affiliated with Kaiser Permanente Medical Center - Roseville.

Dr. Mendoza's Experience

Years in Practice: 43

Conditions Treated by Dr. Mendoza

Procedures Performed by Dr. Mendoza

Dr. Mendoza's Specialties

Allergy & Immunology

Dr. Mendoza's Education & Training

Medical School: University of California, San Diego School of Medicine; Graduated 1972

Dr. Mendoza's Rating

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Overall Rating


  • Explains conditions & treatments
  • Takes time to answer my questions
  • Provides follow-up as needed
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Dr. Mendoza's Accepted Insurance

  • Kaiser Permanente

Dr. Mendoza's Office Information & Appointments

Office Locations

Kaiser Permanente Medical Group
Kaiser Permanente Medical Center

1 Quality Dr
Vacaville, CA 95688
(707) 624-4000


Office Hours and Information

Fax: (707) 624-2051

Practice Website:

Accepting New Patients: Yes

Medicare Accepted: Yes

Medicaid Accepted: Yes

Monday 8:00 AM - 5:00 PM
Tuesday 8:00 AM - 5:00 PM
Wednesday 8:00 AM - 5:00 PM
Thursday 8:00 AM - 5:00 PM
Friday 8:00 AM - 5:00 PM
Saturday 12:00 PM - 11:59 PM
Sunday 12:00 PM - 11:59 PM

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Dr. Mendoza's Hospital Affiliations

Office Locations

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