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Gastroenterologist (digestive)
35 years of experience
Video profile
Accepting new patients
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. John Siegfried:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

  • Currently 4 of 4 stars
Patient comments (1)

The overall average patient rating of Dr. John Siegfried is Excellent. Dr. Siegfried has been reviewed by 2 patients who have provided 1 comments. The rating is 4 out of 4 stars.

Patient Ratings
Ease of Appointment 2.5
  • Currently 2.5 of 4 stars
Promptness 3.0
  • Currently 3 of 4 stars
Courteous Staff 4.0
  • Currently 4 of 4 stars
Accurate Diagnosis 4.0
  • Currently 4 of 4 stars
Bedside Manner 4.0
  • Currently 4 of 4 stars
Spends Time with Me 4.0
  • Currently 4 of 4 stars
Follows Up After Visit 4.0
  • Currently 4 of 4 stars

Specialties & Research

Dr. John Siegfried, MD is board certified in Gastroenterology.

  • He has special expertise in 1 area:
  • Crohn`s disease Hemorrhoid treatment Ulcers-general Age 16 Hiatal hernia Hepatitis Abdominalcolorectal cancer

Education & Awards

Dr. Siegfried graduated from University of Illinois at Chicago.


Dr. Siegfried has 12 hospital affiliations:

  • Rush Copley Medical Center 
  • Edward Hospital 


  • French
  • English

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Additional Information
Dr. John David Siegfried MD is a male Internist, has 35 years of experience and practices in Gastroenterology.
Where does Dr. John D. Siegfried practice?
Dr. John Siegfried has 4 office locations.
Dr. John Siegfried practices Gastroenterology near Aurora, IL.
Additional practice locations include: Champaign, IL.
See Aurora Gastroenterologists.