Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Holly Nguyen Diep, MD

Pediatrics Physician in Harbor City, CA · enumerated 2007.

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

National Provider Identifier

1164626214

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Registry record

Entity type Individual (Type 1)

Name Dr. Holly Nguyen Diep

Credential MD

Sex Female

Practice address 25825 Vermont Ave, Harbor City, CA, 90710

Phone (310) 325-5111

Enumeration date Jun 13, 2007

Last updated in NPPES Nov 29, 2021

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License A95539 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

How do I verify Holly Diep's NPI record?

Cross-check NPI 1164626214 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1164626214 active?

Yes, as of the latest NPPES snapshot, NPI 1164626214 is active (record last updated 2021-11-29).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-29.