Active NPI
Dexter Tzulun Mai, LCSW
- Clinical Social Worker
- San Francisco, CA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Social Worker
- License
- 134200
- Practice address
- 1559B Sloat Blvd Ste 254
San Francisco, CA 94132-1222 - Phone
- (415) 320-6138
- NPI assigned
- Mar 26, 2019
- 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 |
|---|---|---|---|---|
| Clinical Social Worker | 1041C0700X | 134200 | CA | Primary |
Addresses
Primary practice location
1559B Sloat Blvd Ste 254
San Francisco, CA 94132-1222
Mailing address
1559B Sloat Blvd Ste 254
San Francisco, CA 94132-1222
Other practice location 1
647 Veterans Blvd Ste A
Redwood City, CA 94063-1441
Phone (415) 320-6138
Other names 1
- Tzu Lun Mai
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 115870 | CA | MD | Marriage & Family Therapist |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Video Game Child and Family Counseling Inc. | Current | Accepting new patients | |
| Dexter Mai, Licensed Clinical Social Worker | Clinical | Current | Accepting new patients |
| Progress Foundation | Past | Accepting new patients | |
| Progress Foundation | Past | Accepting new patients | |
| Asian Health Services | Past | Accepting new patients |
Locations
647 Veterans Blvd
Ste A
Redwood City, CA 94063
Phone (650) 336-0054
1559B Sloat Blvd
San Francisco, CA 94132
Phone (415) 290-6004
121 W Washington Ave
Ste 204
Sunnyvale, CA 94086
Phone (310) 962-1995
Organizations & group practices 5
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.
-
- Clinical Social Worker
- Redwood City, CA
- NPI 1770444176
-
- Mental Health Counselor
- San Jose, CA
- NPI 1962122937
-
- Federally Qualified Health Center (FQHC)
- Oakland, CA
- NPI 1386096691
-
dba Avenues
- Mental Illness Community Based Residential Treatment Facility
- San Francisco, CA
- NPI 1063577906
-
dba Progress Supportive Housing Program
- Case Management Agency
- San Francisco, CA
- NPI 1902960974
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1553558400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1781481600000",
"number": "1932660834",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1559B SLOAT BLVD STE 254",
"city": "SAN FRANCISCO",
"state": "CA",
"postal_code": "941321222"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1559B SLOAT BLVD STE 254",
"city": "SAN FRANCISCO",
"state": "CA",
"postal_code": "941321222",
"telephone_number": "415-320-6138"
}
],
"practiceLocations": [
{
"address_1": "647 Veterans Blvd Ste A",
"address_purpose": "LOCATION",
"city": "Redwood City",
"state": "CA",
"postal_code": "940631441",
"country_code": "US",
"telephone_number": "415-320-6138",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "MAI",
"first_name": "DEXTER",
"middle_name": "TZULUN",
"credential": "LCSW",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2019-03-26",
"last_updated": "2026-06-15",
"certification_date": "2026-06-15",
"status": "A"
},
"taxonomies": [
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "CA",
"license": "134200",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": [
{
"first_name": "TZU",
"last_name": "MAI",
"middle_name": "LUN",
"code": "5",
"type": "Other Name"
}
]
}
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 Jun 15, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.