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

James J. Herdegen, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1184737793

James J. Herdegen, MD is a Pulmonary Disease in Chicago, Illinois. Graduated from University of Chicago, Pritzker School of Medicine in 1986, 40 years ago. Practices with Rush University Medical Group, a 1,499-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in Illinois and Wisconsin.

Years since qualifying
40
Trained at
University of Chicago, Pritzker School of Medicine
Licensed in
IL, WI
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

1740 W Taylor St
Chicago, IL 60612-7232
Phone: (866) 600-2273
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 9555 S 52nd Ave, Oak Lawn, IL 60453-3054 — (708) 634-0950
  • 14555 W National Ave, New Berlin, WI 53151-4494 — (844) 284-0381

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036078423 (IL)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 75092 (WI)

Record details

NPI number1184737793
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 16, 2006
Last updated in NPPESJuly 29, 2025
Certification dateJuly 29, 2025

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS)
Medical schoolUNIVERSITY OF CHICAGO, PRITZKER SCHOOL OF MEDICINE
Graduated 1986 (40 years in practice)
Group practice Rush University Medical Group — 1499 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

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