Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nicole Leznik

Behavior Analyst in Simi Valley, CA · enumerated 2019.

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

National Provider Identifier

1689217473

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Registry record

Entity type Individual (Type 1)

Name Nicole Leznik

Sex Female

Practice address 1900 E Los Angeles Ave, Simi Valley, CA, 93065

Phone (000) 000-0000

Fax (000) 000-0000

Enumeration date Oct 23, 2019

Last updated in NPPES Oct 23, 2019

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers 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.

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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 Nicole Leznik?

Nicole Leznik 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-10-23.