Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Genentox Laboratories LLC

Q: What is the NPI number for Genentox Laboratories LLC?

The NPI for Genentox Laboratories LLC is 1538686597, a Type 2 (organization) record in the CMS NPPES registry.

Clinical Medical Laboratory in Santa Ana, CA · enumerated 2017 · authorized official Ambreen Williams, Owner.

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

National Provider Identifier

1538686597

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Genentox Laboratories LLC

Other name <Unavail>

Practice address 2001 E 1st St Ste 109, Santa Ana, CA, 92705

Phone (833) 668-2522

Fax (833) 668-2329

Enumeration date Aug 29, 2017

Last updated in NPPES Feb 12, 2026

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories Primary

Authorized official

Name Ambreen Williams

Title Owner

Phone (951) 532-8893

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

Who is the authorized official for Genentox Laboratories LLC?

NPPES lists Ambreen Williams (Owner) as the authorized official for this organization.

What is the NPI number for Genentox Laboratories LLC?

The NPI for Genentox Laboratories LLC is 1538686597, a Type 2 (organization) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-12.