Leslie Guzman

Leslie Guzman is a Behavior Analyst provider (Behavior Analyst) practicing in Hesperia, CA, registered in the NPPES registry with NPI 1649881467 since 2020.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1649881467
Entity type	Individual (Type 1)
Name	Leslie Guzman
Sex	Female
Practice address	Hesperia, CA, 92345
Phone	7607908991
Enumeration date	2020-08-14
Last updated in NPPES	2020-08-14

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

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
103K00000X	Behavior Analyst	Primary	—	—

Copy-ready billing details

Provider: Leslie Guzman
NPI: 1649881467
Taxonomy: 103K00000X (Behavior Analyst)
Address: Hesperia, CA, 92345

Verify this record

Cross-check NPI 1649881467 against the authoritative CMS record: view Leslie Guzman on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

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.

What specialty is Leslie Guzman?

Leslie Guzman is registered in NPPES with the primary taxonomy of Behavior Analyst. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-08-14.