Brian Holoyda, MD, MPH, MBA
NPI 1144588989 · Psychiatry Physician · Martinez, CA
Brian Holoyda, MD, MPH, MBA is a Psychiatry Physician provider in Martinez, CA (NPI 1144588989).
Provider details
- NPI number
- 1144588989
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MPH, MBA
- Sex
- Male
- Sole proprietor
- No
- License
- 2017017688 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
- 2012-04-30
- Last updated
- 2025-04-12
- Certified
- 2025-04-12
Frequently asked questions
- What is Brian Holoyda's NPI number?
- Brian Holoyda's National Provider Identifier (NPI) is 1144588989, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brian Holoyda's specialty?
- Brian Holoyda is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Brian Holoyda located?
- Brian Holoyda's practice location on file with NPPES is 1000 Ward St, Martinez, CA 94553-1360.
- What is Brian Holoyda's phone number?
- The practice phone number listed in the NPPES registry for Brian Holoyda is (925) 335-4600.
- Is Brian Holoyda's NPI active?
- Yes — Brian Holoyda's NPI (1144588989) is active in the NPPES registry as of the last update on 2025-04-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.