Active NPI
Rita A. Williams-Washington
- Social Worker
- San Leandro, CA
National Provider Identifier
1316495609
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Social Worker
- License
- ASW123586
- Practice address
- 777 Davis St Ste 300
San Leandro, CA 94577-6923 - Phone
- (510) 839-3800
- NPI assigned
- Sep 14, 2016
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Case Manager/Care Coordinator | 171M00000X | |||
| Social Worker | 104100000X | ASW123586 | CA | Primary |
Addresses
Primary practice location
777 Davis St Ste 300
San Leandro, CA 94577-6923
Mailing address
160 Glen Cove Marina Rd E Ste 102
Vallejo, CA 94591-7290
Phone (707) 648-2000
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 123586 | Other | CA | BBS |
Other names 1
- Rita A. Williams
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 |
|---|---|---|---|
| ASW123586 | CA | MD | Social Worker |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Alternative Family Services, Inc. | Past | Accepting new patients | |
| Alternative Family Services, Inc. | Past | Accepting new patients |
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.
-
- Community/Behavioral Health Agency
- Pleasanton, CA
- NPI 1619275435
-
- Community/Behavioral Health Agency
- Pleasanton, CA
- NPI 1730390162
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1473811200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1763942400000",
"number": "1316495609",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "160 GLEN COVE MARINA RD E STE 102",
"city": "VALLEJO",
"state": "CA",
"postal_code": "945917290",
"telephone_number": "707-648-2000",
"fax_number": "707-648-2300"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "777 DAVIS ST STE 300",
"city": "SAN LEANDRO",
"state": "CA",
"postal_code": "945776923",
"telephone_number": "510-839-3800"
}
],
"practiceLocations": [],
"basic": {
"last_name": "WILLIAMS-WASHINGTON",
"first_name": "RITA",
"middle_name": "A.",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2016-09-14",
"last_updated": "2025-11-24",
"certification_date": "2025-11-24",
"status": "A"
},
"taxonomies": [
{
"code": "171M00000X",
"taxonomy_group": "",
"desc": "Case Manager/Care Coordinator",
"state": null,
"license": null,
"primary": false
},
{
"code": "104100000X",
"taxonomy_group": "",
"desc": "Social Worker",
"state": "CA",
"license": "ASW123586",
"primary": true
}
],
"identifiers": [
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "BBS",
"identifier": "123586",
"state": "CA"
}
],
"endpoints": [],
"other_names": [
{
"first_name": "RITA",
"last_name": "WILLIAMS",
"middle_name": "A.",
"code": "5",
"type": "Other Name"
}
]
}Other providers in San Leandro, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 24, 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.