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

Dr. Gregory Wade Joiner, PH.D.

Psychologist in Lubbock, TX · enumerated 2006.

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

National Provider Identifier

1235158726

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Registry record

Entity type Individual (Type 1)

Name Dr. Gregory Wade Joiner

Credential PH.D.

Sex Male

Practice address Lubbock, TX, 79412

Phone (806) 797-7100

Fax (806) 797-7101

Enumeration date Jul 18, 2006

Last updated in NPPES Jul 21, 2022

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

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 31113 (TX) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License 31113 (TX) 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 Gregory Joiner?

The National Provider Identifier (NPI) for Gregory Joiner is 1235158726, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gregory Joiner practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.