Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Leslie Chaskes Larsen, RN, MS, CPNP

Pediatric Nurse Practitioner in Phoenix, AZ · enumerated 2006.

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

National Provider Identifier

1508816984

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Registry record

Entity type Individual (Type 1)

Name Mrs. Leslie Chaskes Larsen

Credential RN, MS, CPNP

Sex Female

Practice address 500 W Thomas Rd Ste 250, Phoenix, AZ, 85013

Phone (602) 406-3520

Fax (602) 406-6162

Enumeration date May 10, 2006

Last updated in NPPES Dec 6, 2024

Taxonomy & licenses

363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP11792 (AZ) 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 Leslie Larsen?

The National Provider Identifier (NPI) for Leslie Larsen is 1508816984, a Type 1 (individual) record in the CMS NPPES registry.

Where does Leslie Larsen practice?

The practice location on file with NPPES is in Phoenix, AZ. 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 2024-12-06.