Active NPI
Zachary Bonzell, MD
- Psychiatry Physician
- San Francisco, CA
National Provider Identifier
1669111720
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Psychiatry Physician
- License
- A201283
- Practice address
- 675 18TH St
San Francisco, CA 94143-4200 - Phone
- (510) 333-1390
- NPI assigned
- May 27, 2022
- 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Psychiatry Physician | 2084P0800X | A201283 | CA | Primary |
Addresses
Primary practice location
675 18TH St
San Francisco, CA 94143-4200
Mailing address
5649 Castle Dr
Oakland, CA 94611-2727
Phone (510) 333-1390
Other practice location 1
1801 Vicente St
San Francisco, CA 94116-2923
Phone (415) 681-3211
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
- University of Southern California Keck School of Medicine, 2022
- Medicare assignment
- May accept Medicare assignment
Practice addresses (Care Compare)
7677 Oakport St
Suite 1200
Oakland, CA 94621-1946
PO Box
Pasadena, CA 91189
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| A201283 | CA | MD | Psychiatry Physician |
Organizations & group practices 2
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.
-
- Surgery Physician
- Oakland, CA
- NPI 1740332931
-
dba Josefina Narvaez Mental Health Center MH Aoa
- Mental Health Clinic/Center (Including Community Mental Health Center)
- San Jose, CA
- NPI 1699885079
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1653609600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1762128000000",
"number": "1669111720",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "5649 CASTLE DR",
"city": "OAKLAND",
"state": "CA",
"postal_code": "946112727",
"telephone_number": "510-333-1390"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "675 18TH ST",
"city": "SAN FRANCISCO",
"state": "CA",
"postal_code": "941434200",
"telephone_number": "510-333-1390"
}
],
"practiceLocations": [
{
"address_1": "1801 Vicente St",
"address_purpose": "LOCATION",
"city": "San Francisco",
"state": "CA",
"postal_code": "941162923",
"country_code": "US",
"telephone_number": "415-681-3211",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "BONZELL",
"first_name": "ZACHARY",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2022-05-27",
"last_updated": "2025-11-03",
"certification_date": "2025-11-03",
"status": "A"
},
"taxonomies": [
{
"code": "2084P0800X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Psychiatry",
"state": "CA",
"license": "A201283",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in San Francisco, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 3, 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.