William Mckay, M.D.
NPI 1790874162 · Emergency Medicine Physician · San Antonio, TX
William Mckay, M.D. is a Emergency Medicine Physician provider in San Antonio, TX (NPI 1790874162).
Provider details
- NPI number
- 1790874162
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G0479 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-12
- Last updated
- 2013-05-17
Frequently asked questions
- What is William Mckay's NPI number?
- William Mckay's National Provider Identifier (NPI) is 1790874162, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Mckay's specialty?
- William Mckay is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Mckay located?
- William Mckay's practice location on file with NPPES is 13722 Embassy Row, San Antonio, TX 78216-2000.
- What is William Mckay's phone number?
- The practice phone number listed in the NPPES registry for William Mckay is (210) 349-5577.
- Is William Mckay's NPI active?
- Yes — William Mckay's NPI (1790874162) is active in the NPPES registry as of the last update on 2013-05-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.