Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. Stephen Christopher Woo, PA-C

Q: What is the NPI number for Stephen Woo?

The National Provider Identifier (NPI) for Stephen Woo is 1609912690, a Type 1 (individual) record in the CMS NPPES registry.

Medical Physician Assistant in San Gabriel, CA · enumerated 2007.

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

National Provider Identifier

1609912690

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Registry record

Entity type Individual (Type 1)

Name Mr. Stephen Christopher Woo

Credential PA-C

Sex Male

Practice address San Gabriel, CA, 91776

Phone (626) 289-5461

Enumeration date Jan 29, 2007

Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA18159 (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

What is the NPI number for Stephen Woo?

The National Provider Identifier (NPI) for Stephen Woo is 1609912690, a Type 1 (individual) record in the CMS NPPES registry.

Where does Stephen Woo practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.