Active NPI
Xiao F Tan, PHARMD
- Pharmacist
- San Mateo, CA
National Provider Identifier
1124762950
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pharmacist
- License
- 85242
- Practice address
- 222 W 39TH Ave
San Mateo, CA 94403-4364 - Phone
- (650) 573-2385
- NPI assigned
- Apr 27, 2022
- 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Pharmacist | 183500000X | 85242 | CA | Primary |
Addresses
Primary practice location
222 W 39TH Ave
San Mateo, CA 94403-4364
Mailing address
222 W 39TH Ave
San Mateo, CA 94403-4364
Phone (650) 573-2385
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
- Credentials
- Doctor of Pharmacy
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1651017600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1787616000000",
"number": "1124762950",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "222 W 39TH AVE",
"city": "SAN MATEO",
"state": "CA",
"postal_code": "944034364",
"telephone_number": "650-573-2385"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "222 W 39TH AVE",
"city": "SAN MATEO",
"state": "CA",
"postal_code": "944034364",
"telephone_number": "650-573-2385"
}
],
"practiceLocations": [],
"basic": {
"last_name": "TAN",
"first_name": "XIAO",
"middle_name": "F",
"credential": "PHARMD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2022-04-27",
"last_updated": "2026-08-25",
"certification_date": "2026-08-25",
"status": "A"
},
"taxonomies": [
{
"code": "183500000X",
"taxonomy_group": "",
"desc": "Pharmacist",
"state": "CA",
"license": "85242",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}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 Aug 25, 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.