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

Brian J Holoyda, MD, MPH, MBA

Individual provider Psychiatry Physician · NPI 1144588989

Brian J Holoyda, MD, MPH, MBA is a Psychiatry in Martinez, California. Qualified in 2012, 14 years ago. Licensed in California and Missouri.

Years since qualifying
14
Licensed in
CA, MO
In the registry since
2012
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MPH — Master of Public Health
A graduate degree in population health.
MBA — Master of Business Administration
A graduate business degree.

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Practice location Address checks out

1000 Ward St
Martinez, CA 94553-1360
Phone: (925) 335-4600
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence A126944 (CA)
Psychiatry Physician Taxonomy 2084P0800X · Licence 2017017688 (MO)

Record details

NPI number1144588989
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MPH , MBA
Sole proprietorNo
NPI enumeratedApril 30, 2012
Last updated in NPPESApril 12, 2025
Certification dateApril 12, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Accepts Medicare assignment Not indicated
Practice locations2 on file with Medicare

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