NPI Portal NPI Lookup & Verification

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

Dr. Brian Tuan Gregg, PHD, OTR/L, CHT

Occupational Therapist in Fort Sam Houston, TX · enumerated 2006.

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

National Provider Identifier

1003913708

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Brian Tuan Gregg
Credential PHD, OTR/L, CHT
Sex Male
Practice address Fort Sam Houston, TX, 78234
Phone (210) 808-2240
Enumeration date Sep 17, 2006
Last updated in NPPES Nov 5, 2020

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

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 5710 (NC) 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 Brian Gregg?
The National Provider Identifier (NPI) for Brian Gregg is 1003913708, a Type 1 (individual) record in the CMS NPPES registry.
Where does Brian Gregg practice?
The practice location on file with NPPES is in Fort Sam Houston, TX. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-05.