Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark Joon Lee, PA-C

Q: What is the NPI number for Mark Lee?

The National Provider Identifier (NPI) for Mark Lee is 1669738225, a Type 1 (individual) record in the CMS NPPES registry.

Physician Assistant in West Covina, CA · enumerated 2012.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1669738225

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Registry record

Entity type Individual (Type 1)

Name Mark Joon Lee

Credential PA-C

Sex Male

Practice address 420 S Glendora Ave, West Covina, CA, 91790

Phone (562) 928-9600

Enumeration date Apr 9, 2012

Last updated in NPPES Jul 29, 2016

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA22095 (CA) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Mark Lee practice?

The practice location on file with NPPES is in West Covina, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Mark Lee?

The National Provider Identifier (NPI) for Mark Lee is 1669738225, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-07-29.