NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Esoterix Inc.

Clinical Medical Laboratory in Phoenix, AZ · enumerated 2007 · authorized official Kimberly Williams, Vp.

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

National Provider Identifier

1578755963

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Esoterix Inc.
Practice address 5005 S 40th St, Suite 1300, Phoenix, AZ, 85040
Enumeration date Aug 10, 2007
Last updated in NPPES Feb 25, 2014

Taxonomy & classification

291U00000X Clinical Medical Laboratory Laboratories Primary

Authorized official

Name Kimberly Williams
Title Vp

Other identifiers

Identifier Type State Issuer
03D070076 Other AZ CLIA

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 Esoterix Inc.?
NPPES lists Kimberly Williams (Vp) as the authorized official for this organization.
What is the NPI number for Esoterix Inc.?
The NPI for Esoterix Inc. is 1578755963, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-02-25.