NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Anesthesia Resources Ltd

Anesthesiology Physician in Tempe, AZ · enumerated 2005 · authorized official Michael Klein, President.

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

National Provider Identifier

1134100639

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Anesthesia Resources Ltd
Practice address 2000 E Southern Ave, Suite 102, Tempe, AZ, 85282
Phone (480) 820-9141
Fax (480) 820-3785
Enumeration date Nov 10, 2005
Last updated in NPPES Jul 30, 2010

Taxonomy & classification

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 20264 (AZ) Primary

Authorized official

Name Michael Klein
Title President
Phone (480) 820-9141

Other identifiers

Identifier Type State Issuer
055691 AZ Medicaid AZ -

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 Anesthesia Resources Ltd?
NPPES lists Michael Klein (President) as the authorized official for this organization.
What is the NPI number for Anesthesia Resources Ltd?
The NPI for Anesthesia Resources Ltd is 1134100639, 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 2010-07-30.