Tracy Lin DO
About this NPIWhat this record shows.
NPI 1649851718 is registered to Tracy Lin DO, a Internal Medicine practising at 1335 Cypress St Ste 205 in San Dimas, California. Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties. Tracy Lin DO has been enumerated in the National Provider Identifier (NPI) registry since 2021.
Your brand here.
Medicare enrollment
This provider holds a Medicare enrollment on file with the Provider Enrollment, Chain and Ownership System (PECOS). Each enrollment carries a public Medicare Enrollment ID (ENRLMT_ID) used by billers and intermediaries.
Order and Referring Only
- I20211215002459Internal MedicineNV
Source: CMS PECOS public enrollment file.
Insurance & acceptsHow to confirm coverage.
The National Plan and Provider Enumeration System (NPPES) registry does not include commercial insurance network data, so we cannot show which plans Tracy Lin DO accepts. To confirm in-network status with your specific health plan, contact Tracy Lin DO directly at (909) 542-2777.
Frequently asked
Yes. NPI 1649851718 is registered as Active in the CMS NPPES public registry and passes the Luhn check-digit validation that all 10-digit NPIs use.
Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties.
The CMS NPPES Public Registry at npiregistry.cms.hhs.gov is the authoritative source. FindMyNPI mirrors this dataset and refreshes monthly. For real-time verification, you can also call the provider's office at (909) 542-2777.
An individual healthcare provider has a single Type-1 NPI for life. Organisations can hold separate Type-2 NPIs per location, specialty, or sub-entity. Tracy Lin DO is a Type-1 individual NPI.