Dr. Tam Nguyen D.O.
About this NPIWhat this record shows.
NPI 1962520478 is registered to Dr. Tam Nguyen D.O., a Internal Medicine practising at 200 Jose Figueres Ave Ste 180 in San Jose, California. Internal Medicine physicians (internists) specialise in the prevention, diagnosis, and treatment of diseases in adults, often coordinating care across multiple subspecialties. Dr. Tam Nguyen D.O. has been enumerated in the National Provider Identifier (NPI) registry since 2007.
Your brand here.
Secondary identifiers
Additional identifiers this provider has registered with NPPES. Used by medical billers, credentialers, and insurance verifiers to cross-reference claims and enrollments.
Other
- 20A9636CA· Issued by MEDICAL LICENSE
Source: NPPES public registry.
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.
Practitioner
- I20070725000300Internal MedicineCA
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 Dr. Tam Nguyen D.O. accepts. To confirm in-network status with your specific health plan, contact Dr. Tam Nguyen D.O. directly at (408) 258-5083.
Frequently asked
Yes. NPI 1962520478 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 (408) 258-5083.
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. Dr. Tam Nguyen D.O. is a Type-1 individual NPI.