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Practice Focus Areas
This medical professional has a particular interest or expertise in:
- Celiac Disease
- Colon Polyp
- Colorectal Cancer
- Endoscopy
- Gastroesophageal Reflux Disease (GERD)
- Gastrointestinal Disorders
- General Gastroenterology
- GI Bleeding
Education
- Medical Education:
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MD, University of Chicago Pritzker School of Medicine - 2015
- Residency:
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University of Chicago - 2018
- Fellowships:
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University of Chicago - 2021
Board Certifications
- American Board of Internal Medicine - Internal Medicine (Certified)
- American Board of Internal Medicine/Gastroenterology - Gastroenterology (Certified)
Faculty Profile
Assistant Professor, Feinberg School of MedicinePractice Groups and Affiliations
- Medical Group:
- Northwestern Medical Group
- Alignment Category:
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Northwestern Medicine Physician Network
- On Medical Staff At:
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Northwestern Memorial Hospital
Ratings and Reviews
At Northwestern Medicine, our patient’s feedback is important to us. While different care providers have their own unique strengths, we strive to be as transparent as possible with our quality of care.
Read Ratings FAQsOverall Rating
691 Ratings
Reviews from Patients
Reviews from Patients
December 17, 2025
5.0 star star star star starDr. Muller is very patient, thorough, and kind. I had been having major GI issues for a few years that no other doctor could figure out. Since seeing Dr. Muller, he has found my correct diagnosis and I am continuing to heal. I'm very thankful for his care!
October 14, 2025
4.0 star star star star star_borderHe and his team respond quickly to MyChart and phone calls, and try to accommodate established patients. So far, he seems attentive and careful, and more proactive than my previous GI doctor.
September 29, 2025
5.0 star star star star starDr. Muller has gone through great lengths to find the correct diagnoses for me after years of misdiagnosis at other facilities. He makes me feel very valued as a patient, he has great bedside manner, and is patient and thorough.
September 04, 2025
5.0 star star star star starI have been dealing with chronic GI issues for over 3 years, I have been to MANY other doctors but Dr. Muller has been the first to taken the time to properly diagnose me and help me find relief.
July 19, 2025
5.0 star star star star starI really can't offer a complete review for the very young Dr Muller since I only saw him when I was wheeled into the procedure room. Since my procedure was in the afternoon, I'm suspected I was not his first procedure so his overview on the procedure came across as rote.
Disclosures
Charles Muller, MD reported no external professional relationships for calendar year 2024.
External Professional Relationships
Pharmaceutical, device, and biotechnology companies frequently collaborate with basic scientists and physicians within an academic medical center to help advance science and improve patient care. These relationships are important in achieving scientific breakthroughs and in establishing the effectiveness and safety of promising new therapies. In order to assure objectivity in clinical research and patient care, the Northwestern University Feinberg School of Medicine (Feinberg), Northwestern Memorial HealthCare, Children's Hospital of Chicago Medical Center, and the Shirley Ryan AbilityLab have adopted integrity policies that require research and clinical faculty (in full-time, part-time, and unpaid/voluntary categories) to report compensated and uncompensated external industry relationships. Patients are encouraged to discuss these disclosures with their physician as well as to inquire as to how these relationships are overseen by Feinberg. To learn more about our Disclosure and Professional Integrity Policy, and the conflict of interest policies of our joint affiliate survey partners, please go to our Office for Regulatory Affairs Policies page.
Northwestern Medical Group