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

Dr. Joseph J Hennessy, MD

Individual provider Internal Medicine Physician · NPI 1265407209

Dr. Joseph J Hennessy, MD is an Internal Medicine Physician in Chicago, Illinois. Practices as a sole proprietor and works from 2 locations. Licensed in Illinois.

Licensed in
IL
In the registry since
2006
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

1520 W Harrison St
Chicago, IL 60607-3106
Phone: (312) 942-3192
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 676 N Michigan Ave, Chicago, IL 60611-2883 — (312) 780-2301

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036082176 (IL)

Record details

NPI number1265407209
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 22, 2006
Last updated in NPPESMarch 5, 2026
Certification dateMarch 5, 2026

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