Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. William Leslie Fulliton, PH.D.

Clinical Psychologist in Memphis, TN · enumerated 2013.

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

National Provider Identifier

1578997615

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. William Leslie Fulliton

Credential PH.D.

Sex Male

Practice address Memphis, TN, 38104

Phone (901) 276-9606

Fax (901) 276-9607

Enumeration date Aug 26, 2013

Last updated in NPPES Jan 23, 2019

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers · License 1-17-26623 (TN) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License P1531 (TN) 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

Where does William Fulliton practice?

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

What is the NPI number for William Fulliton?

The National Provider Identifier (NPI) for William Fulliton is 1578997615, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Alicia Adair Behavior Analyst · Memphis, TN NPI 1285154815

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-01-23.