Alexander S. Tosiou, MD

Alexander S. Tosiou, MD

4.9 
946 ratings  Read Reviews
Northwestern Medicine logoNorthwestern Medical Group

Primary Specialty

Gastroenterology

Is your insurance accepted? Select plan

Schedule Appointment

Choose a scheduling option:

RETURNING PATIENT

Schedule online with your MyNM account

 CALL

Education

Medical Education:
MD, Loyola University Stritch School of Medicine - 1993
Residency:
McGaw Medical Center of Northwestern University - 1996
Fellowships:
Advocate Health Care (Advocate Lutheran General Hospital) - 1999

Board Certifications

  • American Board of Internal Medicine - Gastroenterology (Certified)

Faculty Profile

Clinical Assistant Professor, Feinberg School of Medicine

View Faculty Profile

Practice Groups and Affiliations

Medical Group:
Northwestern Medical Group
Alignment Category:
Northwestern Medicine Physician Network
On Medical Staff At:
Grayslake Ambulatory Surgery Center
Northwestern 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 FAQs

Overall Rating

4.9
4.9 

946 Ratings

Sort By Newest

Reviews from Patients

63 Reviews

Reviews from Patients

Sort By Newest
63 Reviews

April 24, 2024

5.0

He takes the time to listen to my concerns. He’s professional and caring when treating me.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

April 24, 2024

5.0

Dr. Tosiou takes the time to listen to and answers concerns. Very professional as well as personable.

Was this helpful? Yes (1) No (0)

Thanks for your feedback!

April 19, 2024

5.0

Very professional. Explanations were easy to understand and all questions were answered.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

April 18, 2024

5.0

Doctor explained my test I needed so I understand it

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

April 16, 2024

5.0

Dr. Tosiou is knowledgeable and thorough in his approach to gastroenterology healthcare. He has always provided top notch care.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

April 16, 2024

5.0

Very smart and caring discussions

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

April 15, 2024

5.0

Paid more attention than others

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

April 15, 2024

5.0

Great team.👍

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

April 15, 2024

5.0

Very professional

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

April 11, 2024

5.0

He explain everything to you and answer your question

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

April 08, 2024

5.0

Dr. Tosiou is very kind. He listened and had great advice moving forward

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

April 08, 2024

5.0

Very professional. Took the time to explain everything and ordered the tests that hopefully will resolve my issues.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

April 06, 2024

5.0

Dr. Tosiou was attentive and answered all of my questions.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

April 03, 2024

5.0

Very professional in his work, he resolved all my doubts, explained perfectly the steps to follow. I think few doctors are interested in your health. Thank you Dr. Alexander!!!

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

April 03, 2024

5.0

Knowledgeable and very understanding.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

March 19, 2024

5.0

Explains things thoroughly

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

March 15, 2024

5.0

We were fortunate enough to have had Dr. Tosiou in the hospital and found him exceptional. Listens, explains, works to develop plan-of-care. Personable, knowledgeable, excellent.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

March 15, 2024

5.0

His knowledge, expertise and ability to explain things to non-medical patients.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

March 12, 2024

5.0

He's been my doctor for years. I like and trust him.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

March 12, 2024

5.0

Dr. Tosiou always listens to any concerns and is very thoroughl.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

March 11, 2024

5.0

very experienced & knowledgeable, great communicator, explains everything very well, we have great discussions, down to earth, works hard for patient, takes complete & wholistic view, great judgements.

Was this helpful? Yes (1) No (0)

Thanks for your feedback!

March 06, 2024

5.0

He listened to and thoroughly addressed my concerns and questions. Explained tests and why to get. Gave suggestions for future inquiries/actions. I felt he truly understood my concerns and addressed solutions. Very impressed w/Dr. Tosiou My family and I have much experience w/Mayo Clinic, and I felt my experience was of same high quality as Mayo Clinic. Thank you Dr. Tosiou and staff.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

March 01, 2024

5.0

Dr. Tosiou answered all my questions. Very nice.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 26, 2024

5.0

He explained everything so that we understood. He was knowledgeable and made me feel cared for.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 23, 2024

5.0

Explained things and take time with you. He cares

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 14, 2024

5.0

He listens and cares

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 14, 2024

5.0

He is a very good Dr and cares about his patients. Very good at exposing everything.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

February 14, 2024

5.0

He took the time to answer all my questions. Provided the information I was looking for -discussed my symptoms, explained the test options and helped me make a plan I with which I was comfortable. He listened to me and was caring in his interactions with me.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 29, 2024

5.0

Dr. Tosiou reviews your chart before entering the exam room. He explains in detail your issues and answers your questions.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 29, 2024

5.0

Really listened, asked questions, took time to explain what he thought was the best way to progress. Felt he was sincere and truly wanted to help.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 22, 2024

5.0

The Doctor was very helpful and answered all of my questions.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 18, 2024

5.0

Hetakeshistimewithyou

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 16, 2024

5.0

The doctor explained my situation so that I wss able to understand

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 15, 2024

5.0

quick and informative. He already reviewed my chart and CT scan prior to my appointment which was really nice, it's always surprising to me how many doctors don't review patient charts before an appointment.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 04, 2024

5.0

See above regarding his remarkable abilities as a provider.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 03, 2024

5.0

Very knowledgeable very attentive with me every time.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 03, 2024

5.0

His professional care.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

January 03, 2024

5.0

Great doctor!

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 18, 2023

5.0

Dr. Tosiou has been my doctor since like 2000/2001. I truly could not have gotten this far without him!!

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 13, 2023

5.0

as already describe... very friendly, knowledgeable and helpful--asked excellent questions, listened really well and explained everything very well and clearly. ...like A+

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 11, 2023

5.0

Dr sweet! He explained well to me all concerns.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 06, 2023

5.0

Very good service from the doctor and his nurses and all his staff

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

December 06, 2023

5.0

Didn’t discount even small symptoms

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 28, 2023

5.0

Dr. Tosiou listened and resonded to my questions and concerns. He was thorough in his explanation of the procedures to be performed.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 27, 2023

5.0

Great doctor

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 27, 2023

5.0

He has the patience to hear your concerns

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 20, 2023

5.0

I've known about Dr Tosiou for many years having worked for the hospital laboratory for many years. I also was with the group and Dr Blitstein for many years.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 08, 2023

5.0

Same as above plus knowledgeable and great “bedside” manner. Very likable.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

November 07, 2023

5.0

My appointment was prompt and very through. He asked me many questions that helped me remember incidents.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 31, 2023

5.0

He was extremely kind and thorough. I feel like I’m in great hands.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 30, 2023

5.0

Dr. Tosiou is very attentive, knowledgeable and experienced. Does not rush through the exam, explains well the test results, gives me enough time to share my concerns and opinions and answers all my questions thoroughly. Very friendly and nice also.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 30, 2023

5.0

He made me feel heard and provided me with the information he felt would help me with my health.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 26, 2023

5.0

Excellent Doctor!

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 23, 2023

5.0

Like his patient approach and gives you all the medical explanations so you understand what your feeling.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 09, 2023

5.0

Very thorough and informative.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

October 09, 2023

5.0

Very nice, explain everything very clear

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 27, 2023

5.0

Listens to you

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 25, 2023

5.0

He listens to the patient.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 23, 2023

5.0

This was my first appointment with Dr. Tosiou. He is a great listener and is clear in his explanations. He zeroed in on my problems and laid out a plan of actions to follow.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 21, 2023

5.0

Dr. Tosiou attentive, detailed and suggestions. Listened to my concerns symptoms.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 19, 2023

5.0

Knowledgeable and personable

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 15, 2023

5.0

Great communication

Was this helpful? Yes (0) No (0)

Thanks for your feedback!

September 14, 2023

4.0

He was professional and informative. He made me feel at ease.

Was this helpful? Yes (0) No (0)

Thanks for your feedback!
View more reviews

Disclosures

Alexander S. Tosiou, MD reported no external professional relationships for calendar year 2023.

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.

View More Disclosures