Steven Siemieniak, DO
NPI 1659965598 · Emergency Medicine Physician · Jbsa Lackland, TX
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Siemieniak, DO is a Emergency Medicine Physician provider in Jbsa Lackland, TX (NPI 1659965598).
Provider details
- NPI number
- 1659965598
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- 0102207565 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 3551 Roger Brooke DrJbsa Ft Sam Houston, TX 78234-4504Phone: (210) 916-3400
Registry dates
- Enumerated
- 2021-02-22
- Last updated
- 2024-10-17
- Certified
- 2024-10-17
Frequently asked questions
- What is Steven Siemieniak's NPI number?
- Steven Siemieniak's National Provider Identifier (NPI) is 1659965598, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Siemieniak's specialty?
- Steven Siemieniak is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Siemieniak located?
- Steven Siemieniak's practice location on file with NPPES is 1100 Wilford Hall Loop # 4554, Jbsa Lackland, TX 78236-5638.
- What is Steven Siemieniak's phone number?
- The practice phone number listed in the NPPES registry for Steven Siemieniak is (210) 292-7412.
- Does Steven Siemieniak accept Medicare?
- Steven Siemieniak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Siemieniak's NPI active?
- Yes — Steven Siemieniak's NPI (1659965598) is active in the NPPES registry as of the last update on 2024-10-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.