
Alexander S. Tosiou, MD

Primary Specialty
Gastroenterology
Insurance
Insurance plans are subject to change. View insurance plans accepted at each hospital and by each NMHC physician group.Education
- Medical Education:
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Loyola University Stritch School of Medicine - 1993
- Residency:
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McGaw Medical Center of Northwestern University - 1996
- Fellowships:
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Advocate Health Care (Advocate Lutheran General Hospital) - 1999
Board Certifications
- American Board of Internal Medicine - Gastroenterology (Certified)
Faculty Profile
Health System Clinician, Feinberg School of MedicinePractice Groups and Affiliations
- Medical Group:
- Northwestern Medical Group
- Physician Category:
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Northwestern Medicine Physician Network
- On Medical Staff At:
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Grayslake Ambulatory Surgery CenterNorthwestern Lake Forest 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
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Friendly & Courteous5.0 star star star star star
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Will Recommend to Others4.9 star star star star star
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Clear Explanations5.0 star star star star star
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Shows Concern4.9 star star star star star
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Includes You In Decisions4.9 star star star star star
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Explains Medications4.9 star star star star star
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Follow-Up Instructions4.9 star star star star star
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Easy to Understand4.9 star star star star star
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Time Spent With Patient4.9 star star star star star
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Confidence in Doctor5.0 star star star star star
Reviews from Patients
February 25, 2019
Dr. Tosiou was great, He listened to all of my concerns and addressed each of them with me. I felt that I had a complicated case. He put me at ease, he deals with those types of cases on a daily basis. I appreciated that he took the extra time with me to go over tests and procedures that he ordered.
May 15, 2018
Dr. Tosiou is a very thorough physician. He is also a truly nice man. I was so impressed with my first visit. Today he performed an Endoscopy and Colonoscopy which he explained in great detail. Northwestern is fortunate to have this Gastrointerologist and so am I.
April 26, 2018
Dr. Tosiou is a wonderful example of a Dr. who is professional, kind, concerned and very knowledgeable in his specialty. I feel extremely indebted to him and Northwestern should feel the same. Not many doctors like him out there anymore.