Brian J. Holoyda, MD, MPH, MBA
Psychiatry Physician · Martinez, CA
Brian J. Holoyda, MD, MPH, MBA is a psychiatry physician with a practice address in Martinez, California, and NPI 1144588989, issued on Apr 30, 2012. Check the license (California A126944, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Brian J. Holoyda
- Credential
- MD, MPH, MBA
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- A126944 CA
2017017688 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Ward St, Martinez, CA 94553
- Phone
- (925) 335-4600
- Enumerated
- Apr 30, 2012
- Record last updated
- Apr 12, 2025
- Medicare enrollment
- Enrolled (PECOS I20260511003197); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 1000 Ward St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Zenaida AsiainRegistered Nurse1225152184
- Mary BoldsLicensed Vocational Nurse1093839946
- Ethel BroderickPharmacist1922953223
- Holly Chamberlin, PHARM D.Pharmacist1821336512
- Harjinder Dhanoa, RNRegistered Nurse1174647028
- David Ezra, MFTMarriage & Family Therapist1477754158
Verify Brian J. Holoyda in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A126944Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Brian J. Holoyda among 8,673 psychiatry physician records in California
Brian J. Holoyda, MD, MPH, MBA is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2012, is newer than 66% of them.
- NPI issued2012 · 66% of these records are older, 31% newer
- In a Medicare fileNo · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2012 · median 2005 among the 3,295 with a school on file
- Record last updated2025 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
35 psychiatry physician records list a practice address in Martinez
They are 35 of the 1,816 NPPES records with a practice address in Martinez, and 8,673 psychiatry physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 8,673 in California → Every provider in Martinez → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Aneela Ahmed, MDMartinez, CA 945531568545317
- Charita Dagcuta, MDMartinez, CA 945531851461768
- Alina Faramazyan, MDMartinez, CA 945531093898744
- Kristine Girard, MDMartinez, CA 945531124093208
- Rita Hargrave, M.D.Martinez, CA 945531801874219
- George HeitzmanMartinez, CA 945531619054491
- Larry Kean, M.D.Martinez, CA 945531154318830
- Joan Kotun, MDMartinez, CA 945531497791347
Common questions
What is Brian J. Holoyda, MD, MPH, MBA's NPI number?
Brian J. Holoyda, MD, MPH, MBA's National Provider Identifier (NPI) is 1144588989, issued on Apr 30, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Brian J. Holoyda, MD, MPH, MBA located?
The NPPES record lists a practice address at 1000 Ward St, Martinez, CA, 94553. Phone: (925) 335-4600. Providers update this record themselves, so call before visiting.
How can I verify Brian J. Holoyda, MD, MPH, MBA's license?
NPPES lists California license number A126944, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.