Active NPI
William M Ashby Sr.
- Clinical Social Worker
- Van Nuys, CA
National Provider Identifier
1063993400
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Social Worker
- License
- 138255
- Practice address
- 16650 Sherman Way
Van Nuys, CA 91406-3782 - Phone
- (818) 901-4836
- NPI assigned
- Aug 23, 2018
- 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 |
|---|---|---|---|---|
| Clinical Social Worker | 1041C0700X | 138255 | CA | Primary |
| Addiction (Substance Use Disorder) Counselor | 101YA0400X | 191022 | CA |
Addresses
Primary practice location
16650 Sherman Way
Van Nuys, CA 91406-3782
Mailing address
16650 Sherman Way
Van Nuys, CA 91406-3782
Phone (818) 901-4836
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 |
|---|---|---|---|
| 191022 | CA | MD | Addiction (Substance Use Disorder) Counselor |
| 138255 | CA | MD | Clinical Social Worker |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Los Angeles County Department of Public Health | Current | Accepting new patients | |
| Los Angeles Centers for Alcohol and Drug Abuse | Past | Accepting new patients |
Interoperability endpoints
- williamashby-lacada@lacsapc.netsmartdirect.net
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.
-
- Public Health or Welfare Agency
- Alhambra, CA
- NPI 1700090834
-
- Substance Abuse Rehabilitation Facility
- Santa Fe Springs, CA
- NPI 1922467265
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1534982400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1777334400000",
"number": "1063993400",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "16650 SHERMAN WAY",
"city": "VAN NUYS",
"state": "CA",
"postal_code": "914063782",
"telephone_number": "818-901-4836"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "16650 SHERMAN WAY",
"city": "VAN NUYS",
"state": "CA",
"postal_code": "914063782",
"telephone_number": "818-901-4836"
}
],
"practiceLocations": [],
"basic": {
"last_name": "ASHBY",
"first_name": "WILLIAM",
"middle_name": "M",
"name_suffix": "Sr.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2018-08-23",
"last_updated": "2026-04-28",
"certification_date": "2026-04-28",
"status": "A"
},
"taxonomies": [
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "CA",
"license": "138255",
"primary": true
},
{
"code": "101YA0400X",
"taxonomy_group": "",
"desc": "Counselor, Addiction (Substance Use Disorder)",
"state": "CA",
"license": "191022",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Van Nuys, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 28, 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.