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

Michael Kozak

Anatomic Pathology & Clinical Pathology Physician in West Hollywood, CA · enumerated 2020.

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

National Provider Identifier

1144859448

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Registry record

Entity type Individual (Type 1)

Name Michael Kozak

Sex Male

Practice address West Hollywood, CA, 90048

Phone (310) 423-6941

Enumeration date Apr 7, 2020

Last updated in NPPES Jul 17, 2025

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

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License 20A21105 (CA) 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

How do I verify Michael Kozak's NPI record?

Cross-check NPI 1144859448 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1144859448 active?

Yes, as of the latest NPPES snapshot, NPI 1144859448 is active (record last updated 2025-07-17).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-17.