Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Brook A Kritzstein, LCSW

Clinical Social Worker in Mesa, AZ · enumerated 2023.

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

National Provider Identifier

1689453466

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Registry record

Entity type Individual (Type 1)

Name Brook A Kritzstein

Credential LCSW

Sex Female

Practice address 2120 W Guadalupe Rd Ste 6, Mesa, AZ, 85202

Phone (602) 230-7373

Fax (480) 629-8577

Enumeration date Sep 21, 2023

Last updated in NPPES Jun 26, 2026

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCSW-23855 (AZ) Primary

104100000X Social Worker Behavioral Health & Social Service Providers · License LMSW-21763 (AZ) Secondary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW 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

How do I verify Brook Kritzstein's NPI record?

Cross-check NPI 1689453466 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1689453466 active?

Yes, as of the latest NPPES snapshot, NPI 1689453466 is active (record last updated 2026-06-26).

Other providers at this practice address

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Marjorie Swift-Cady Clinical Social Worker · Mesa, AZ NPI 1417054834 Francisco Neufeld Psychiatry Physician · Mesa, AZ NPI 1972673903 Jennifer Jackson Mental Health Counselor · Mesa, AZ NPI 1811377161 Marcus Fossmeyer Psychiatric/Mental Health Nurse Practitioner · Mesa, AZ NPI 1447773478 Joy Ageh Professional Counselor · Mesa, AZ NPI 1144734393 John Opuroku Professional Counselor · Mesa, AZ NPI 1700433091 Jesus Prado Psychiatric/Mental Health Nurse Practitioner · Mesa, AZ NPI 1023620473 Mark Williams Psychiatric/Mental Health Nurse Practitioner · Mesa, AZ NPI 1023786225

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-26.