NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Pain Diagnosis & Treatment, Inc. A Medical Clinic

Pain Medicine (Anesthesiology) Physician in Glendora, CA · enumerated 2007 · authorized official Brian Gwartz, President.

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

National Provider Identifier

1891819447

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Pain Diagnosis & Treatment, Inc. A Medical Clinic
Practice address 210 S Grand Ave, 315, Glendora, CA, 91741
Phone (626) 857-7400
Fax (626) 857-7404
Enumeration date Mar 19, 2007
Last updated in NPPES May 5, 2015

Taxonomy & classification

207LP2900X Pain Medicine (Anesthesiology) Physician Allopathic & Osteopathic Physicians · License A43746 (CA) Primary
207LP2900X Pain Medicine (Anesthesiology) Physician Allopathic & Osteopathic Physicians · License A20970 (CA) Secondary

Authorized official

Name Brian Gwartz
Title President
Phone (626) 857-7400

Other identifiers

Identifier Type State Issuer
00A437461 Medicaid CA -

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

Who is the authorized official for Pain Diagnosis & Treatment, Inc. A Medical Clinic?
NPPES lists Brian Gwartz (President) as the authorized official for this organization.
What is the NPI number for Pain Diagnosis & Treatment, Inc. A Medical Clinic?
The NPI for Pain Diagnosis & Treatment, Inc. A Medical Clinic is 1891819447, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-05-05.