Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Stephen Kirk Armstrong, MD

Individual provider Diagnostic Radiology Physician · NPI 1992766083

Stephen Kirk Armstrong, MD practises Diagnostic Radiology in Tyler, Texas. Graduated from University of Texas Medical School at San Antonio in 1986, 40 years ago. Practices with Radiology Associates of North Texas PA, a 341-clinician group. Licensed in Texas.

Years since qualifying
40
Trained at
University of Texas Medical School at San Antonio
Licensed in
TX
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

627 Turtle Creek Dr
Tyler, TX 75701-1832
Phone: (903) 593-2539
Fax: (903) 593-0559
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence H2216 (TX)

Record details

NPI number1992766083
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 29, 2006
Last updated in NPPESNovember 13, 2020
Certification dateNovember 13, 2020

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT SAN ANTONIO
Graduated 1986 (40 years in practice)
Group practice Radiology Associates Of North Texas Pa — 341 clinicians
Accepts Medicare assignment Not indicated

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients3,371
Services billed 4,351 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Radiology Associates of North Texas PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 341 clinicians in the practice; 12 are shown here.

Other providers in Tyler