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

Dr. Nirosuthan Rajasingam, MD

Individual provider Internal Medicine Physician · NPI 1790125474

Dr. Nirosuthan Rajasingam, MD is an Internal Medicine Physician in Chicago, Illinois. Works from 3 locations. Licensed in Illinois.

Licensed in
IL
In the registry since
2013
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

1500 S Fairfield Ave Ap
Chicago, IL 60608-1782
Phone: (773) 542-2000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1045 W Stephenson St, Freeport, IL 61032-4864 — (815) 599-6000
  • 1036 W Stephenson St, Freeport, IL 61032-4865 — (815) 599-6000

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 125.064095 (IL)

Record details

NPI number1790125474
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 26, 2013
Last updated in NPPESJuly 30, 2026
Certification dateJuly 30, 2026

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