William James McKay, M.D.

Emergency Medicine Physician · San Antonio, TX

William James McKay, M.D. is an emergency medicine physician with a practice address in San Antonio, Texas, and NPI 1790874162, issued on Oct 12, 2006. Check the license (Texas G0479, as entered in NPPES) on the Texas Medical Board; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026

1790874162

Name: William James McKay
Credential: M.D.
Primary taxonomy: Emergency Medicine Physician 207P00000X
License number: G0479 TX
Self-reported in NPPES; status is on the state search
Practice location: 13722 Embassy Row, San Antonio, TX 78216
Phone: (210) 349-5577
Enumerated: Oct 12, 2006
Record last updated: Jul 26, 2026
Entity: Type 1 · individual

Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.

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8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →

Also registered at 13722 Embassy Row

A shared address usually means a shared clinic or building; it does not show who employs whom.

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Frank Adams, D.O.Emergency Medicine Physician1134193543
Larry Ake, PA-CMedical Physician Assistant1114181369
Hilario Alvarado, MDFamily Medicine Physician1831166172
Dorothy AshworthPhysical Therapy Assistant1164845707
James Baggett, MDFamily Medicine Physician1922075266

Verify William James McKay in five checks

1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
2LicenseActive license and public ordersTexas Medical Board
Search for license G0479Check the board
3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
5CertificationBoard certificationABMS AOA NCCPA AANPNot checked

Open the Texas license search

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William James McKay among 4,885 emergency medicine physician records in Texas

William James McKay, M.D. is one of 4,885 emergency medicine physician records with a practice address in Texas. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 6% of them.

NPI issued2006 · 6% of these records are older, 67% newer
In a Medicare fileNo · 83% of these records are
In the CMS Doctors and Clinicians fileNo · 57% of these records are
Record last updated2026 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

400 emergency medicine physician records list a practice address in San Antonio

They are 400 of the 37,749 NPPES records with a practice address in San Antonio, and 4,885 emergency medicine physician records in Texas. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 4,885 in Texas → Every provider in San Antonio → Emergency Medicine Physician nationwide →

The 8 emergency medicine physician records with the nearest ZIP codes

Frank Adams, D.O.San Antonio, TX 782161134193543
Larry MillerSan Antonio, TX 782161629245675
Matilda Perkins, MDSan Antonio, TX 782161083681811
Victor Romo, M.D.San Antonio, TX 782161043471469
Micah Schmidt, M.D.San Antonio, TX 782161013981901
Lucas Beven, DOSan Antonio, TX 782151528626678
Dennis Bordes, MDSan Antonio, TX 782171477299428
Connor Byrne, MDSan Antonio, TX 782171972280212

Common questions

What is William James McKay, M.D.'s NPI number?

William James McKay, M.D.'s National Provider Identifier (NPI) is 1790874162, issued on Oct 12, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William James McKay, M.D. located?

The NPPES record lists a practice address at 13722 Embassy Row, San Antonio, TX, 78216. Phone: (210) 349-5577. Providers update this record themselves, so call before visiting.

How can I verify William James McKay, M.D.'s license?

NPPES lists Texas license number G0479, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.