Thomas G. Diaz M.D,P.A.
Thomas G. Diaz M.D,P.A. is a healthcare organization registered as Primary Care Clinic/Center in Katy, TX, holding Type 2 (organization) NPI 1174711501 since 2007. The authorized official on file is Thomas Diaz, President.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1174711501 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Thomas G. Diaz M.D,P.A. |
| Practice address | 1331 W GRAND PKWY N STE 345, Katy, TX, 77493 |
| Phone | 2813988044 |
| Enumeration date | 2007-10-10 |
| Last updated in NPPES | 2007-12-04 |
Authorized official
| Name | Thomas Diaz |
|---|---|
| Title | President |
| Phone | 2813988044 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 261QP2300X | Primary Care Clinic/Center | Primary | G4564 | TX |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00733U | Other | — | BCBS PIN |
| 00733U | Other | — | RR MCR PIN |
Copy-ready billing details
Provider: Thomas G. Diaz M.D,P.A. NPI: 1174711501 Taxonomy: 261QP2300X (Primary Care Clinic/Center) Address: 1331 W GRAND PKWY N STE 345, Katy, TX, 77493
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1407306947 | Premier Internal Medicine Associates of Houston Pllc | Organization | Internal Medicine Physician | Katy, TX |
Verify this record
Cross-check NPI 1174711501 against the authoritative CMS record: view Thomas G. Diaz M.D,P.A. on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
Who is the authorized official for Thomas G. Diaz M.D,P.A.?
What is the NPI number for Thomas G. Diaz M.D,P.A.?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-12-04.