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

Thomas M Armstrong, MD

Individual provider Internal Medicine Physician · NPI 1518940816

Thomas M Armstrong, MD is an Internal Medicine in Indianapolis, Indiana. Graduated from Indiana University School of Medicine in 1983, 43 years ago. Practices with St Vincent Physician Services Hospital and Health Care Center, a 282-clinician group and accepts Medicare assignment. Licensed in Indiana.

Years since qualifying
43
Trained at
Indiana University School of Medicine
Licensed in
IN
In the registry since
2005
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

2001 W 86th St
Indianapolis, IN 46260-1902
Phone: (317) 338-3634
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 01032743A (IN)

Record details

NPI number1518940816
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 22, 2005
Last updated in NPPESMarch 18, 2016
Mailing address8840 Commerce Park Pl Ste E, Indianapolis, IN 46268-3129

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolINDIANA UNIVERSITY SCHOOL OF MEDICINE
Graduated 1983 (43 years in practice)
Group practice St Vincent Physician Services Hospital And Health Care Center — 282 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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