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

Individual provider Internal Medicine Physician · NPI 1104845734

John Jay Shannon, MD is an Internal Medicine Physician in Chicago, Illinois. Practices as a sole proprietor. Licensed in Illinois and Texas.

Licensed in
IL, TX
In the registry since
2006
Specialties on file
6
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

1900 W Polk St Ste 220
Chicago, IL 60612-3723
Phone: (312) 864-5504
Fax: (312) 864-9994
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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 036079704 (IL)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 036079704 (IL)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence 036079704 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence H2772 (TX)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence H2772 (TX)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence H2772 (TX)

Record details

NPI number1104845734
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 18, 2006
Last updated in NPPESMarch 3, 2017

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