Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Drs. Leiman and Simon, PA

Q: What is the NPI number for Drs. Leiman and Simon, PA?

The NPI for Drs. Leiman and Simon, PA is 1033318456, a Type 2 (organization) record in the CMS NPPES registry.

Specialist in Dallas, TX · enumerated 2007 · authorized official Herbert Leiman, President.

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

National Provider Identifier

1033318456

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Registry record

Entity type Organization (Type 2)

Legal business name Drs. Leiman and Simon, PA

Practice address 3600 Gaston Ave Ste 705, Dallas, TX, 75246

Phone (214) 821-0820

Fax (214) 826-8430

Enumeration date Jul 16, 2007

Last updated in NPPES Jul 16, 2007

Taxonomy & classification

174400000X Specialist Other Service Providers · License D6066 (TX) Primary

174400000X Specialist Other Service Providers · License E3453 (TX) Secondary

Authorized official

Name Herbert Leiman

Title President

Phone (214) 821-0820

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 Drs. Leiman and Simon, PA?

The NPI for Drs. Leiman and Simon, PA is 1033318456, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Drs. Leiman and Simon, PA?

NPPES lists Herbert Leiman (President) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-16.