Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Joseph Szulczewski, MA, LPC, LISAC

Addiction (Substance Use Disorder) Counselor in Glendale, AZ · enumerated 2005.

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

National Provider Identifier

1053300707

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Registry record

Entity type Individual (Type 1)

Name Mr. Joseph Szulczewski

Credential MA, LPC, LISAC

Sex Male

Practice address 4425 W Glendale Ave, Suite 2, Glendale, AZ, 85301

Phone (602) 818-6612

Enumeration date Oct 17, 2005

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License LISAC1228 (AZ) Primary

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License LPC11103 (AZ) Secondary

LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC 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

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 Joseph Szulczewski?

Joseph Szulczewski is registered in NPPES with the primary taxonomy of Addiction (Substance Use Disorder) Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.