BRIAN J. HOLOYDA MD, MPH, MBA – NPI #1144588989
Psychiatry & Neurology
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
BRIAN HOLOYDA is a psychiatry & neurologist located in MARTINEZ, CA. NPPES has assigned the NPI number 1144588989 to BRIAN HOLOYDA on April 30, 2012. It is a Type-1 NPI, indicating this NPI number is associated with an individual. The primary taxonomy selected by this provider is 2084P0800X from the Health Care Provider Taxonomy code set, which is classified as Psychiatry & Neurology, specializing in Psychiatry
The NPI profile was last updated on Apr 12, 2025. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for BRIAN HOLOYDA below.
NPI Profile for
BRIAN J. HOLOYDA
(more than 14 years ago)
MARTINEZ, CA 94553-1360 Phone: (925) 335-4600 Fax:
NAPA, CA 94559-2841 Phone: (707) 258-8757 Fax:
Note: NPPES allows providers to attest to the accuracy of their NPI data. When a provider request any change to the NPI record, they will be able to attest to their changed NPI data, resulting in an updated certification date.
A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.
| Taxonomy Classification / Specialization | State | License |
|---|---|---|
| 2084P0800X - Psychiatry & Neurology / Psychiatry (Primary) |
MO | 2017017688 |
The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.