Active NPI
Alyssa Moss, LCSW
- Clinical Social Worker
- San Mateo, CA
National Provider Identifier
1285306498
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Social Worker
- License
- LCSW100704
- Practice address
- 50 S San Mateo Dr Ste 480
San Mateo, CA 94401-3833 - Phone
- (415) 418-0998
- NPI assigned
- Oct 5, 2021
- Sex
- Female
- 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 | LCSW100704 | CA | Primary |
Addresses
Primary practice location
50 S San Mateo Dr Ste 480
San Mateo, CA 94401-3833
Mailing address
50 S San Mateo Dr Ste 480
San Mateo, CA 94401-3833
Phone (650) 696-2220
Other names 1
- Alyssa Kasten
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: No
- Power mobility devices: No
- Hospice: No
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| LCSW100704 | CA | MD | Clinical Social Worker |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1633392000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1784160000000",
"number": "1285306498",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "50 S SAN MATEO DR STE 480",
"city": "SAN MATEO",
"state": "CA",
"postal_code": "944013833",
"telephone_number": "650-696-2220"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "50 S SAN MATEO DR STE 480",
"city": "SAN MATEO",
"state": "CA",
"postal_code": "944013833",
"telephone_number": "415-418-0998"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MOSS",
"first_name": "ALYSSA",
"credential": "LCSW",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2021-10-05",
"last_updated": "2026-07-16",
"certification_date": "2026-07-16",
"status": "A"
},
"taxonomies": [
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "CA",
"license": "LCSW100704",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": [
{
"first_name": "ALYSSA",
"last_name": "KASTEN",
"code": "1",
"type": "Former Name"
}
]
}Other providers in San Mateo, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 16, 2026; 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.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.