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

Mr. Nicholas Thong Au, MSN, APRN, AGACNP-BC

Q: What is the NPI number for Nicholas Au?

The National Provider Identifier (NPI) for Nicholas Au is 1407588858, a Type 1 (individual) record in the CMS NPPES registry.

Acute Care Nurse Practitioner in Covina, CA · enumerated 2022.

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

National Provider Identifier

1407588858

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Registry record

Entity type Individual (Type 1)

Name Mr. Nicholas Thong Au

Credential MSN, APRN, AGACNP-BC

Sex Male

Practice address Covina, CA, 91723

Phone (626) 915-4700

Fax (626) 214-7814

Enumeration date Jun 24, 2022

Last updated in NPPES Aug 21, 2025

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

Taxonomy & licenses

163WC0200X Critical Care Medicine Registered Nurse Nursing Service Providers · License 95275145 (CA) Secondary

363LA2100X Acute Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95036173 (CA) Primary

APRN · Advanced Practice Registered Nurse: An umbrella credential covering NPs, CRNAs, CNMs, and clinical nurse specialists. About the APRN 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

What is the NPI number for Nicholas Au?

The National Provider Identifier (NPI) for Nicholas Au is 1407588858, a Type 1 (individual) record in the CMS NPPES registry.

Where does Nicholas Au practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-21.