Active NPI
Cailin Frances O'Brien, ACSW
- Clinical Social Worker
- Lynwood, CA
National Provider Identifier
1417792011
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Social Worker
- License
- 134605
- Practice address
- 3680 E Imperial Hwy Ste 220
Lynwood, CA 90262-2663 - Phone
- (877) 722-2737
- NPI assigned
- Jun 26, 2024
- 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 | 134605 | CA | Primary |
Addresses
Primary practice location
3680 E Imperial Hwy Ste 220
Lynwood, CA 90262-2663
Mailing address
1906 Carmona Ave
Los Angeles, CA 90016-1117
Phone (203) 505-4386
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 |
|---|---|---|---|
| 134605 | CA | MD | Clinical Social Worker |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1719360000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1763769600000",
"number": "1417792011",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1906 CARMONA AVE",
"city": "LOS ANGELES",
"state": "CA",
"postal_code": "900161117",
"telephone_number": "203-505-4386"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "3680 E IMPERIAL HWY STE 220",
"city": "LYNWOOD",
"state": "CA",
"postal_code": "902622663",
"telephone_number": "877-722-2737"
}
],
"practiceLocations": [],
"basic": {
"last_name": "O'BRIEN",
"first_name": "CAILIN",
"middle_name": "FRANCES",
"credential": "ACSW",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2024-06-26",
"last_updated": "2025-11-22",
"certification_date": "2025-11-22",
"status": "A"
},
"taxonomies": [
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "CA",
"license": "134605",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Lynwood, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 22, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.