DR. WARREN RAY LITTLEFORD PHD
NPI 1285755918
Psychologist in Chandler, AZ

Active since April 02, 2007PECOS Enrolled
908 W CHANDLER BLVD STE D, CHANDLER, AZ 85225(480) 214-5970(480) 821-7775 Get Directions Write a Review

NPPES record last updated: November 11, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Warren Ray Littleford Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. WARREN RAY LITTLEFORD PHD (NPI 1285755918) is an individual psychologist in Chandler, Arizona, licensed in Arizona (3303) and active in the NPI registry since April 2007. He is enrolled in Medicare PECOS and is a graduate of Other (1986).

NPPES Registry Identity

NPI1285755918
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameDR. WARREN RAY LITTLEFORDCredential: PHD
Location Address908 W CHANDLER BLVD STE DChandler, AZ 85225-2551
Mailing Address908 W Chandler Blvd Ste DChandler, AZ 85225-2551 · (480) 214-5970 · Fax (480) 821-7775
Fax(480) 821-7775
Sole ProprietorNo
Medical School CMSOtherGraduated 1986
Enumeration DateApril 2, 2007
Last NPPES UpdateNovember 11, 2020
NPPES CertifiedNovember 11, 2020
✔ NPI 1285755918 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
Licenses✔ Licensed in AZ · 3303✔ Licensed in NM · 694✔ Licensed in CO · 1475
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
908 W CHANDLER BLVD STE D, Chandler, AZ 85225

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Warren Ray Littleford Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8426091000
PECOS Enrollment IDI20050607000172
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Warren Littleford reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Psychologist
1490 SOUTH PRICE ROAD, SUITE 110-C
Chandler, AZ 85286
  • Reassigned Medicare billing, Arizona enrollment

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychotherapy, 45 minutes 90834
Psychotherapy is a treatment method where you converse with a therapist about your thoughts, feelings, and behaviors. In a 45-minute session, the therapist assists you in understanding and managing your mental health concerns, improving emotional wellness, and promoting personal growth.
347 services33 patients
Psychotherapy, 1 hour 90837
Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 1-hour session, you'll talk about your feelings, thoughts, and behaviors to help identify and manage mental health issues. This process aids in personal growth, healing, and improved well-being.
33 services12 patients
Psychiatric diagnostic evaluation 90791
A psychiatric diagnostic evaluation is a thorough assessment used to identify any mental health conditions you may have. It involves a detailed discussion about your symptoms, thoughts, feelings and behavior patterns. Your medical history and family's mental health history are also considered.
18 services17 patients

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Counselor (Mental Health)
908 W CHANDLER BLVD STE D
CHANDLER, AZ 85225
Non-emergency Medical Transport (VAN)
908 W CHANDLER BLVD STE D
CHANDLER, AZ 85225
Psychologist (Clinical)
908 W CHANDLER BLVD STE D
CHANDLER, AZ 85225
General Practice
908 W CHANDLER BLVD STE D
CHANDLER, AZ 85225
Psychologist (Clinical)
908 W CHANDLER BLVD STE D
CHANDLER, AZ 85225

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Warren Littleford's NPI number?

The NPI number for Warren Littleford is 1285755918. It was assigned to this individual provider in the NPPES registry on April 2, 2007.

Where is Warren Littleford located?

Warren Littleford practices at 908 W Chandler Blvd Ste D, Chandler, AZ 85225. The listed phone number is (480) 214-5970.

What is Warren Littleford's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is Warren Littleford enrolled in Medicare?

Yes. Warren Littleford is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Warren Littleford's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Warren Littleford reassigns Medicare benefits to Warren R. Littleford, Phd, PC (Chandler, AZ). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Warren Littleford's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Warren Littleford accept?

Health plans from Cigna HealthCare of Arizona, Inc and UnitedHealthcare list Warren Littleford as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Warren Littleford was last updated on November 11, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.