Active NPI
Lydia Tin-Wei Tam, MD
- Pediatric Hematology & Oncology Physician
- San Francisco, CA
National Provider Identifier
1467193284
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pediatric Hematology & Oncology Physician
- License
- A202041
- Practice address
- 550 16TH Street, 4TH Floor Box 0110
University of California San Francisco
San Francisco, CA 94158 - Phone
- (415) 476-3565
- NPI assigned
- Apr 5, 2022
- 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 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Pediatrics Physician | 208000000X | 61298437 | WA | |
| Student in an Organized Health Care Education/Training Program | 390200000X | |||
| Pediatric Hematology & Oncology Physician | 2080P0207X | A202041 | CA | Primary |
Addresses
Primary practice location
550 16TH Street, 4TH Floor Box 0110
University of California San Francisco
San Francisco, CA 94158
Mailing address
550 16TH Street, 4TH Floor Box 0110
Dept of Pediatrics, Univ of California San Francisco
San Francisco, CA 94158
Phone (415) 476-3565
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in WA, CA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20220506001250 | WA | Order and Referring Only - Pediatric Medicine | 7012394356 | |
| I20250813001497 | CA | Order and Referring Only - Pediatric Medicine | 7012394356 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 61298437 | WA | MD | Pediatrics Physician |
| A202041 | CA | MD | Pediatric Hematology & Oncology Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1649116800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1752019200000",
"number": "1467193284",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "550 16TH STREET, 4TH FLOOR BOX 0110",
"address_2": "DEPT OF PEDIATRICS, UNIV OF CALIFORNIA SAN FRANCISCO",
"city": "SAN FRANCISCO",
"state": "CA",
"postal_code": "94158",
"telephone_number": "415-476-3565"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "550 16TH STREET, 4TH FLOOR BOX 0110",
"address_2": "UNIVERSITY OF CALIFORNIA SAN FRANCISCO",
"city": "SAN FRANCISCO",
"state": "CA",
"postal_code": "94158",
"telephone_number": "415-476-3565"
}
],
"practiceLocations": [],
"basic": {
"last_name": "TAM",
"first_name": "LYDIA",
"middle_name": "TIN-WEI",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2022-04-05",
"last_updated": "2025-07-09",
"certification_date": "2025-07-09",
"status": "A"
},
"taxonomies": [
{
"code": "208000000X",
"taxonomy_group": "",
"desc": "Pediatrics",
"state": "WA",
"license": "61298437",
"primary": false
},
{
"code": "390200000X",
"taxonomy_group": "",
"desc": "Student in an Organized Health Care Education/Training Program",
"state": null,
"license": null,
"primary": false
},
{
"code": "2080P0207X",
"taxonomy_group": "",
"desc": "Pediatrics, Pediatric Hematology-Oncology",
"state": "CA",
"license": "A202041",
"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 Jul 9, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.