Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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William B Ewen, MD

Individual provider Emergency Medical Services (Emergency Medicine) Physician · NPI 1538355490

William B Ewen, MD is an Emergency Medical Services (Emergency Medicine) Physician in Round Rock, Texas. Works from 2 locations. Licensed in Texas.

Licensed in
TX
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

300 University Blvd
Round Rock, TX 78665-1032
Phone: (512) 509-0100
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 5323 Harry Hines Blvd., Dallas, TX 75390-8579 — (214) 648-3916

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence N6286 (TX)
Emergency Medical Services (Emergency Medicine) Physician Taxonomy 207PE0004X · Licence N6286 (TX)

Record details

NPI number1538355490
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 24, 2007
Last updated in NPPESJanuary 21, 2026
Certification dateJanuary 21, 2026
Mailing addressPo Box 844658, Dallas, TX 75284-4658

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