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

Ryan N Armstrong, MD

Individual provider Vascular & Interventional Radiology Physician · NPI 1154453355

Ryan N Armstrong, MD is an Interventional Radiology in Shenandoah, Texas. Graduated from University of Texas Medical School at San Antonio in 2003, 23 years ago. Practices with Singleton Associates PA, a 795-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
23
Trained at
University of Texas Medical School at San Antonio
Licensed in
TX
In the registry since
2007
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

8850 Six Pines Dr Ste 280
Shenandoah, TX 77380-2683
Phone: (713) 597-8535
Fax: (713) 575-3688
Show map & directions

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

Additional practice locations (1)

  • 7619 Branford Pl Ste 230, Sugar Land, TX 77479-1104 — (713) 575-3686

Specialties & licences

Vascular & Interventional Radiology Physician (primary) Taxonomy 2085R0204X · Licence M3868 (TX)

Record details

NPI number1154453355
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 12, 2007
Last updated in NPPESFebruary 7, 2025
Certification dateFebruary 7, 2025
Mailing address4747 Bellaire Blvd Ste 575, Bellaire, TX 77401-4535

Medicare enrollment

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

Medicare specialtyINTERVENTIONAL RADIOLOGY
Also practisesDIAGNOSTIC RADIOLOGY
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT SAN ANTONIO
Graduated 2003 (23 years in practice)
Group practice Singleton Associates Pa — 795 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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