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

Christopher M Callahan, MD

Individual provider Geriatric Medicine (Internal Medicine) Physician · NPI 1104867043

Christopher M Callahan, MD is a Geriatric Medicine (Internal Medicine) Physician in Indianapolis, Indiana. Works from 2 locations. Licensed in Indiana.

Licensed in
IN
In the registry since
2006
Specialties on file
2
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

1633 N Capitol Ave Ste 322
Indianapolis, IN 46202-1476
Phone: (317) 962-2929
Fax: (317) 962-2070
Show map & directions

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

Additional practice locations (1)

  • 720 Eskenazi Ave, Indianapolis, IN 46202-5187 — (317) 880-7666

Specialties & licences

Geriatric Medicine (Internal Medicine) Physician (primary) Taxonomy 207RG0300X · Licence 01036319A (IN)
Internal Medicine Physician Taxonomy 207R00000X · Licence 01036319A (IN)

Record details

NPI number1104867043
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 10, 2006
Last updated in NPPESSeptember 15, 2025
Certification dateSeptember 15, 2025
Mailing address250 N Shadeland Ave, Indianapolis, IN 46219-4959

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