1. Home
  2. Directory
  3. Texas
  4. Fort Sam Houston
  5. Military Health Care Provider
  6. NPI Profile

DR. THOMAS ANTHONY DIEFFENTHALLER
NPI 1790612943
Military Health Care Provider in Fort Sam Houston, TX

Active since May 04, 2026
3551 ROGER BROOKE DR, FORT SAM HOUSTON, TX 78234(210) 916-7500 Get Directions Write a Review

NPPES record last updated: May 14, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 14, 2026, May 4, 2026 (2 updates tracked since 2026).

About Dr. Thomas Anthony Dieffenthaller NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. THOMAS ANTHONY DIEFFENTHALLER (NPI 1790612943) is an individual military health care provider provider in Fort Sam Houston, Texas and active in the NPI registry since May 2026. He maintains a secondary practice location in Miami.

NPPES Registry Identity

NPI1790612943
Entity TypeIndividualMale
Primary Taxonomy171000000X
Provider Legal NameDR. THOMAS ANTHONY DIEFFENTHALLER
Location Address3551 ROGER BROOKE DRFort Sam Houston, TX 78234-4504
Mailing Address6970 Bird Rd Apt 527Miami, FL 33155-3792
Phone(210) 916-7500
Sole ProprietorNo
Enumeration DateMay 4, 2026
Last NPPES UpdateMay 14, 20262 updates tracked since enumeration
NPPES CertifiedMay 14, 2026
✔ NPI 1790612943 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyMilitary Health Care ProviderOther Service Providers
Taxonomy Code171000000X
Definition
Active duty military health care providers not otherwise classified who need to be separately identified for operational, clinical, or administrative processes.
3551 ROGER BROOKE DR, Fort Sam Houston, TX 78234
Open in Google Maps ↗

Secondary Practice Location 1

Location 16970 Bird Rd Apt 527Miami, FL 33155-3792 · Phone (224) 567-9150

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JANET JONES SIMS CRNA
Nurse Anesthetist, Certified Registered
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Bexar County (253) 223-6272
JAMES KENNEDY HARDIN PA-C
Physician Assistant
3551 ROGER BROOKE DR
JBSA FT SAM HOUSTON, TX 78234
Bexar County (210) 295-4996
DR. DANIEL VICTOR-CALVIN HAMMOND M.D.
Pediatrics (Pediatric Endocrinology)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Bexar County (210) 916-3020
JESSICA FULLER LCSW
Social Worker (Clinical)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Bexar County (210) 808-1859
DR. JASON ROBERT HALL M.D.
Neurological Surgery
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Bexar County (210) 539-9582
MRS. KATHRYN ELAINE HELLAND LCSW
Social Worker (Clinical)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Bexar County (210) 539-9582
DR. HALWARD BLEGEN IV DO
Ophthalmology
3551 ROGER BROOKE DR
JBSA FORT SAM HOUSTON, TX 78234
Bexar County (210) 220-7419
KOLE HOLLAND SPAULDING M.D.
Emergency Medicine (Emergency Medical Services)
3551 ROGER BROOKE DR
FORT SAM HOUSTON, TX 78234
Bexar County (210) 539-9582

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Thomas Dieffenthaller's NPI number?

The NPI number for Thomas Dieffenthaller is 1790612943. It was assigned to this individual provider in the NPPES registry on May 4, 2026.

Where is Thomas Dieffenthaller located?

Thomas Dieffenthaller practices at 3551 Roger Brooke Dr, Fort Sam Houston, TX 78234. The listed phone number is (210) 916-7500.

What is Thomas Dieffenthaller's specialty?

The primary specialty registered for this NPI is Military Health Care Provider with taxonomy code 171000000X.

When was this NPI record last updated?

The NPPES record for Thomas Dieffenthaller was last updated on May 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.