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

Steven Siemieniak, DO

Individual provider Emergency Medicine Physician · NPI 1659965598

Steven Siemieniak, DO is an Emergency Medicine in Jbsa Lackland, Texas. Qualified in 2021, 5 years ago. Practices with Emergency Medicine Services of Tx, PLLC, a 358-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Virginia.

Years since qualifying
5
Licensed in
VA
In the registry since
2021
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

1100 Wilford Hall Loop # 4554
Jbsa Lackland, TX 78236-5638
Phone: (210) 292-7412
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3551 Roger Brooke Dr, Jbsa Ft Sam Houston, TX 78234-4504 — (210) 916-3400

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 0102207565 (VA)

Record details

NPI number1659965598
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedFebruary 22, 2021
Last updated in NPPESJune 26, 2026
Certification dateJune 26, 2026
Mailing address1100 Wilford Hall Loop # 4554, Jbsa Lackland, TX 78236-5638

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Emergency Medicine Services Of Tx, Pllc — 358 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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