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

Individual provider Geriatric Medicine (Internal Medicine) Physician · NPI 1255366191

George Sianis, MD is a General Practice in Chicago, Illinois. Qualified in 1973, 53 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
53
Licensed in
IL
In the registry since
2006
Specialties on file
3
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

4921 N Western Ave
Chicago, IL 60625-1921
Phone: (773) 478-5600
Fax: (773) 478-5602
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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 036-063761 (IL)
Geriatric Medicine (Internal Medicine) Physician Taxonomy 207RG0300X · Licence 036-063761 (IL)
Surgery Physician Taxonomy 208600000X · Licence 036-063761 (IL)

Record details

NPI number1255366191
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 11, 2006
Last updated in NPPESJuly 15, 2023
Certification dateJuly 15, 2023

Medicare enrollment

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

Medicare specialtyGENERAL PRACTICE
Also practisesGENERAL SURGERY
Medical schoolOTHER
Graduated 1973 (53 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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