Active NPI
Eishin Chikamatsu
- Social Worker
- San Francisco, CA
National Provider Identifier
1659129096
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Social Worker
- License
- 136046
- Practice address
- 1500 Franklin St
San Francisco, CA 94109-4523 - Phone
- (415) 474-7310
- NPI assigned
- May 10, 2024
- Sex
- Unspecified or another gender identity
- 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 |
|---|---|---|---|---|
| Social Worker | 104100000X | 136046 | CA | Primary |
Addresses
Primary practice location
1500 Franklin St
San Francisco, CA 94109-4523
Mailing address
1500 Franklin St
San Francisco, CA 94109-4523
Phone (415) 474-7310
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
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1715299200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1781568000000",
"number": "1659129096",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1500 FRANKLIN ST",
"city": "SAN FRANCISCO",
"state": "CA",
"postal_code": "941094523",
"telephone_number": "415-474-7310"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1500 FRANKLIN ST",
"city": "SAN FRANCISCO",
"state": "CA",
"postal_code": "941094523",
"telephone_number": "415-474-7310"
}
],
"practiceLocations": [],
"basic": {
"last_name": "CHIKAMATSU",
"first_name": "EISHIN",
"sole_proprietor": "NO",
"sex": "X",
"enumeration_date": "2024-05-10",
"last_updated": "2026-06-16",
"certification_date": "2026-06-16",
"status": "A"
},
"taxonomies": [
{
"code": "104100000X",
"taxonomy_group": "",
"desc": "Social Worker",
"state": "CA",
"license": "136046",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}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 16, 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.