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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. WILLIAM A. WALKER III D.D.S.
NPI 1891734356
Dentist - Endodontics in Houston, TX

Active since June 06, 2006
1500 S DAIRY ASHFORD ST, SUITE 114, HOUSTON, TX 77077(281) 558-3440 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. William A. Walker Iii D.d.s. NPPES

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

DR. WILLIAM A. WALKER III D.D.S. (NPI 1891734356) is an individual endodontics provider in Houston, Texas, licensed in Texas (17380) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1891734356
Entity TypeIndividualMale
Primary Taxonomy1223E0200X
Provider Legal NameDR. WILLIAM A. WALKER IIICredential: D.D.S.
Location Address1500 S DAIRY ASHFORD ST, SUITE 114Houston, TX 77077-3854
Mailing Address15519 Cloud TopSan Antonio, TX 78248-1348 · (210) 493-8933
Phone(281) 558-3440
Sole ProprietorNo
Enumeration DateJune 6, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1891734356 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · EndodonticsDental Providers
Taxonomy Code1223E0200X
License✔ Licensed in TX · 17380
Definition
The branch of dentistry that is concerned with the morphology, physiology and pathology of the human dental pulp and periradicular tissues. Its study and practice encompass the basic and clinical sciences including biology of the normal pulp, the etiology, diagnosis, prevention and treatment of diseases and injuries of the pulp and associated periradicular conditions.
1500 S DAIRY ASHFORD ST, Houston, TX 77077
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Other Providers at the Same Location NPPES 5

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

DANIEL DSOUZA MD PA
Family Medicine
1500 S DAIRY ASHFORD ST, SUITE 197A
HOUSTON, TX 77077
Harris County (281) 870-8282
LAMBETH FAMILY CHIROPRACTIC
Chiropractor (Rehabilitation)
1500 S DAIRY ASHFORD ST, SUITE 225
HOUSTON, TX 77077
Harris County (281) 497-5577
ROBERT LAMBETH D.C.
Chiropractor
1500 S DAIRY ASHFORD ST
HOUSTON, TX 77077
Harris County (281) 497-5577
TRACY M. CLARK DDS INC
Dentist (Endodontics)
1500 S DAIRY ASHFORD ST, 1500 SOUTH DAIRY ASHFORD STE. 114
HOUSTON, TX 77077
Harris County (281) 558-3440
MRS. JANIE S. GATLIN M. ED., LPC
Counselor (Professional)
1500 S DAIRY ASHFORD ST, SUITE 452
HOUSTON, TX 77077
Harris County (713) 857-8577

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 William Walker's NPI number?

The NPI number for William Walker is 1891734356. It was assigned to this individual provider in the NPPES registry on June 6, 2006.

Where is William Walker located?

William Walker practices at 1500 S Dairy Ashford St Suite 114, Houston, TX 77077. The listed phone number is (281) 558-3440.

What is William Walker's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Endodontics, with taxonomy code 1223E0200X.

When was this NPI record last updated?

The NPPES record for William Walker was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 31 days 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.