Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ann Kim Nguyen, RN

Q: What is the NPI number for Ann Nguyen?

The National Provider Identifier (NPI) for Ann Nguyen is 1902778012, a Type 1 (individual) record in the CMS NPPES registry.

Addiction (Substance Use Disorder) Registered Nurse in Costa Mesa, CA · enumerated 2025.

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

National Provider Identifier

1902778012

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Registry record

Entity type Individual (Type 1)

Name Ann Kim Nguyen

Credential RN

Sex Female

Practice address 956 Azalea Dr, Costa Mesa, CA, 92626

Phone (714) 336-1053

Enumeration date Sep 18, 2025

Last updated in NPPES Sep 18, 2025

Taxonomy & licenses

163WA0400X Addiction (Substance Use Disorder) Registered Nurse Nursing Service Providers · License 95086847 (CA) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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 Ann Nguyen?

The National Provider Identifier (NPI) for Ann Nguyen is 1902778012, a Type 1 (individual) record in the CMS NPPES registry.

Where does Ann Nguyen practice?

The practice location on file with NPPES is in Costa Mesa, 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 2025-09-18.