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

Isabelle Guiang, MSN, CPN, NP-C

Nurse Practitioner in Victorville, CA · enumerated 2012.

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

National Provider Identifier

1790049146

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Registry record

Entity type Individual (Type 1)

Name Isabelle Guiang

Credential MSN, CPN, NP-C

Sex Female

Practice address Victorville, CA, 92392

Phone (760) 881-5349

Enumeration date Jun 30, 2012

Last updated in NPPES Nov 2, 2021

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

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F1216066 (TX) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License NP95006229 (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 specialty is Isabelle Guiang?

Isabelle Guiang is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-02.