Active NPI
Brian J Holoyda, MD, MPH, MBA
- Psychiatry Physician
- Martinez, CA
National Provider Identifier
1144588989
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Psychiatry Physician
- License
- A126944
- Practice address
- 1000 Ward St
Martinez, CA 94553-1360 - Phone
- (925) 335-4600
- NPI assigned
- Apr 30, 2012
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Psychiatry Physician | 2084P0800X | 2017017688 | MO | |
| Psychiatry Physician | 2084P0800X | A126944 | CA | Primary |
Addresses
Primary practice location
1000 Ward St
Martinez, CA 94553-1360
Mailing address
1580 1St St
Napa, CA 94559-2841
Phone (707) 258-8757
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in CA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Psychiatry
- Education
- Other, 2012
- Medicare assignment
- May accept Medicare assignment
Practice addresses (Care Compare)
331 C St
Martinez, CA 94553-3137
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Master of Business Administration, Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| A126944 | CA | MD | Psychiatry Physician |
| 2017017688 | MO | MD | Psychiatry Physician |
Organizations & group practices 1
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Adult Mental Health Clinic/Center
- San Pablo, CA
- NPI 1376620336
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1335744000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1744416000000",
"number": "1144588989",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1580 1ST ST",
"city": "NAPA",
"state": "CA",
"postal_code": "945592841",
"telephone_number": "707-258-8757"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1000 WARD ST",
"city": "MARTINEZ",
"state": "CA",
"postal_code": "945531360",
"telephone_number": "925-335-4600"
}
],
"practiceLocations": [],
"basic": {
"last_name": "HOLOYDA",
"first_name": "BRIAN",
"middle_name": "J",
"credential": "MD, MPH, MBA",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2012-04-30",
"last_updated": "2025-04-12",
"certification_date": "2025-04-12",
"status": "A"
},
"taxonomies": [
{
"code": "2084P0800X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Psychiatry",
"state": "MO",
"license": "2017017688",
"primary": false
},
{
"code": "2084P0800X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Psychiatry",
"state": "CA",
"license": "A126944",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Martinez, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 12, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.