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

Christopher Greb, MD

Individual provider Internal Medicine Physician · NPI 1134623895

Christopher Greb, MD is an Allergy/Immunology in Chicago, Illinois. Graduated from University of Louisville School of Medicine in 2020, 6 years ago. Practices with Rush University Medical Group, a 1,499-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
6
Trained at
University of Louisville School of Medicine
Licensed in
IL
In the registry since
2018
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

1725 W Harrison St Ste 970
Chicago, IL 60612-3828
Phone: (312) 942-6979
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 2160 S 1st Ave, Maywood, IL 60153-3328 — (888) 584-7888
  • 500 S Preston St Rm 305, Louisville, KY 40202-1702 — (502) 852-8696

Specialties & licences

Allergy & Immunology (Internal Medicine) Physician (primary) Taxonomy 207RA0201X · Licence 036165118 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 125.075689 (IL)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1134623895
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 19, 2018
Last updated in NPPESJune 26, 2023
Certification dateJune 26, 2023

Medicare enrollment

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

Medicare specialtyALLERGY/IMMUNOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF LOUISVILLE SCHOOL OF MEDICINE
Graduated 2020 (6 years in practice)
Group practice Rush University Medical Group — 1499 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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