Active NPI
Tracy Lin, DO
- Internal Medicine Physician
- San Dimas, CA
National Provider Identifier
1649851718
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- License
- 20A22787
- Practice address
- 1335 Cypress St Ste 205
San Dimas, CA 91773-3538 - Phone
- (909) 542-2777
- NPI assigned
- Apr 19, 2021
- 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | 20A22787 | CA | Primary |
Addresses
Primary practice location
1335 Cypress St Ste 205
San Dimas, CA 91773-3538
Mailing address
1335 Cypress St Ste 205
San Dimas, CA 91773-3538
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in NV
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20211215002459 | NV | Order and Referring Only - Internal Medicine | 9931590585 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Osteopathy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 20A22787 | CA | MD | Internal Medicine Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1618790400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1780185600000",
"number": "1649851718",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1335 CYPRESS ST STE 205",
"city": "SAN DIMAS",
"state": "CA",
"postal_code": "917733538"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1335 CYPRESS ST STE 205",
"city": "SAN DIMAS",
"state": "CA",
"postal_code": "917733538",
"telephone_number": "909-542-2777"
}
],
"practiceLocations": [],
"basic": {
"last_name": "LIN",
"first_name": "TRACY",
"credential": "DO",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2021-04-19",
"last_updated": "2026-05-31",
"certification_date": "2026-05-31",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "CA",
"license": "20A22787",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in San Dimas, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 31, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.