Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Warren Ray Littleford, PHD

Psychologist in Chandler, AZ · enumerated 2007.

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

National Provider Identifier

1285755918

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Registry record

Entity type Individual (Type 1)

Name Dr. Warren Ray Littleford

Credential PHD

Sex Male

Practice address 908 W Chandler Blvd Ste D, Chandler, AZ, 85225

Phone (480) 214-5970

Fax (480) 821-7775

Enumeration date Apr 2, 2007

Last updated in NPPES Nov 11, 2020

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License 1475 (CO) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 694 (NM) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 3303 (AZ) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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

What is the NPI number for Warren Littleford?

The National Provider Identifier (NPI) for Warren Littleford is 1285755918, a Type 1 (individual) record in the CMS NPPES registry.

Where does Warren Littleford practice?

The practice location on file with NPPES is in Chandler, AZ. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Pamela Goss-Power Clinical Psychologist · Chandler, AZ NPI 1740304286 Roswitha Saenz-Sierzega Psychologist · Chandler, AZ NPI 1811219470 Comfort Medical Transportation of Arizona, LLC Non-emergency Medical Transport (VAN) · Chandler, AZ NPI 1184923831 First Responders Thrive, Pllc Clinical Psychologist · Chandler, AZ NPI 1952963480 Stephen Call General Practice Physician · Chandler, AZ NPI 1740997576 United Healing Services, Pllc Mental Health Counselor · Chandler, AZ NPI 1184582355

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-11.