Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Charlene Hsiaoching Chang, NP

Family Nurse Practitioner in San Mateo, CA · enumerated 2016.

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

National Provider Identifier

1043670441

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Registry record

Entity type Individual (Type 1)

Name Charlene Hsiaoching Chang

Credential NP

Sex Female

Practice address 1100 Park Pl Ste 80, San Mateo, CA, 94403

Phone (925) 867-1800

Enumeration date Feb 26, 2016

Last updated in NPPES Jun 30, 2026

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95003411 (CA) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP credential

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 Charlene Chang practice?

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

What is the NPI number for Charlene Chang?

The National Provider Identifier (NPI) for Charlene Chang is 1043670441, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-30.