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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.

WILLIAM JAMES MCKAY M.D.
NPI 1790874162
Emergency Medicine in San Antonio, TX

Active since October 12, 2006
13722 EMBASSY ROW, SAN ANTONIO, TX 78216(210) 349-5577 Get Directions Write a Review

NPPES record last updated: July 26, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About William James Mckay M.d. NPPES

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

WILLIAM JAMES MCKAY M.D. (NPI 1790874162) is an individual emergency medicine provider in San Antonio, Texas, licensed in Texas (G0479) and active in the NPI registry since October 2006.

NPPES Registry Identity

NPI1790874162
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameWILLIAM JAMES MCKAYCredential: M.D.
Location Address13722 EMBASSY ROWSan Antonio, TX 78216-2000
Mailing Address18511 Shiloh FrstSan Antonio, TX 78258-4471 · (210) 396-7368
Phone(210) 349-5577
Sole ProprietorNo
Enumeration DateOctober 12, 2006
Last NPPES UpdateJuly 26, 2026
✔ NPI 1790874162 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in TX · G0479
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Also ListedFamily MedicineTaxonomy 207Q00000X · License G0479 (TX)
13722 EMBASSY ROW, San Antonio, TX 78216
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Kansas, Inc..Insurance ›

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.

JOHN R CANTU MD
Family Medicine
13722 EMBASSY ROW
SAN ANTONIO, TX 78216
Bexar County (210) 349-5592
ANGELA R SCALZI MD
Family Medicine
13722 EMBASSY ROW
SAN ANTONIO, TX 78216
Bexar County (210) 349-5592
DR. PAUL THOMAS DUNCAN D.O.
Family Medicine
13722 EMBASSY ROW
SAN ANTONIO, TX 78216
Bexar County (210) 403-4210
TMC PROVIDER GROUP PLLC
Clinic/Center (Urgent Care)
13722 EMBASSY ROW
SAN ANTONIO, TX 78216
Bexar County (210) 349-5577
BRIAN R RAIMONDO MD
Family Medicine
13722 EMBASSY ROW
SAN ANTONIO, TX 78216
Bexar County (210) 349-5592
MATILDA PERKINS MD
Emergency Medicine
13722 EMBASSY ROW
SAN ANTONIO, TX 78216
Bexar County (210) 349-5592
CARL SALINAS MD
Family Medicine
13722 EMBASSY ROW
SAN ANTONIO, TX 78216
Bexar County (210) 349-5592
MR. LARRY WAYNE AKE JR. PA-C
Physician Assistant (Medical)
13722 EMBASSY ROW
SAN ANTONIO, TX 78216
Bexar County (210) 349-5577

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 Mckay's NPI number?

The NPI number for William Mckay is 1790874162. It was assigned to this individual provider in the NPPES registry on October 12, 2006.

Where is William Mckay located?

William Mckay practices at 13722 Embassy Row, San Antonio, TX 78216. The listed phone number is (210) 349-5577.

What is William Mckay's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

What insurance does William Mckay accept?

Health plans from Blue Cross and Blue Shield of Kansas, Inc. list William Mckay as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William Mckay was last updated on July 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.