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

Jennifer Dorothea Zwirek

Clinical Social Worker in Phoenix, AZ · enumerated 2008.

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

National Provider Identifier

1346416336

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Registry record

Entity type Individual (Type 1)

Name Jennifer Dorothea Zwirek

Sex Female

Practice address Phoenix, AZ, 85014

Phone (602) 285-0505

Fax (602) 285-1838

Enumeration date Apr 30, 2008

Last updated in NPPES Apr 30, 2008

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCSW12125 (AZ) 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 is the NPI number for Jennifer Zwirek?

The National Provider Identifier (NPI) for Jennifer Zwirek is 1346416336, a Type 1 (individual) record in the CMS NPPES registry.

Where does Jennifer Zwirek practice?

The practice location on file with NPPES is in Phoenix, AZ. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-30.