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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Gregorio Chejfec:

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Specialties & Research

Dr. Gregorio Chejfec, MD is board certified in Anatomic Pathology & Clinical Pathology.

  • He has special expertise in 7 areas:
  • Barrett Esophagus
  • Carcinoid Tumor
  • Carcinoma
  • Colon Cancer
  • Glandular Cancer (Adenocarcinoma)
  • Liver Cancer
  • Stomach Cancer

Education & Awards

Dr. Chejfec graduated from Universidad De Buenos Aires. He has 3 awards.

One of America's Leading Experts on:
Barrett Esophagus
Glandular Cancer (Adenocarcinoma)


Dr. Chejfec has 3 hospital affiliations:

  • Edward Hines Veterans Affairs Hospital, General Medicine Clinic, 
  • University of Illinois Medical Center at Chicago 
  • Chicago Health Care System - West Side Div. - Jessie Brown Hospital 

> > > > Dr. Gregorio Chejfec, MD

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Additional Information
Dr. Gregorio Chejfec MD is a male Pathologist and practices in Anatomic Pathology & Clinical Pathology.
Where does Dr. Gregorio Chejfec practice?
Dr. Gregorio Chejfec has 4 office locations.
Dr. Gregorio Chejfec practices Anatomic Pathology & Clinical Pathology near Glen Ellyn, IL.
Additional practice locations include: Chicago, IL and Hines, IL.
See Glen Ellyn Pathologists.