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Sameer M. Mazhar, MD

4.9

816 ratings Read Reviews

Northwestern Medical Group

Primary Specialty

Gastroenterology

Secondary Specialty

Transplant Hepatology

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Education

Medical Education:: MD, Northwestern University Feinberg School of Medicine - 2002
Residency:: McGaw Medical Center of Northwestern University - 2005
Fellowships:: Massachusetts General Hospital - 2010

Board Certifications

American Board of Internal Medicine/Gastroenterology - Gastroenterology (Certified)

Practice Groups and Affiliations

Medical Group:: Northwestern Medical Group
Alignment Category:: Northwestern Medicine Physician Network
On Medical Staff At:: Central DuPage Hospital

Delnor 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.

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Overall Rating

4.9

4.9

816 Ratings

Reviews from Patients

100 Most Recent Reviews

Reviews from Patients

100 Most Recent Reviews

February 27, 2026

5.0

I was Dr. Mazhar's patient at his previous practice. Very much like his bedside manner.

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February 24, 2026

5.0

Good bedside manner.

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February 23, 2026

5.0

He responds quickly with results and advice on the next step.

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February 23, 2026

5.0

Dr. Mazhar showed care and concern for my well being in a professional manner. I appreciated both his knowledge and skill fir thus surgical procedure.

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February 23, 2026

5.0

Very thorough and great follow up

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February 23, 2026

5.0

He was personable, answered all questions and communicated results in an easy to understand manner.

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February 22, 2026

5.0

Great Doctor. Took a while to get the appointment.

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February 19, 2026

5.0

I was nervous, but the Doctor made me feel confident about the procedure. He explained everything clearly and professionally.

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February 17, 2026

5.0

Dr Mazhar was knowledgeable and informative when he went over everything and covered all the details about the comparative MRI's and CT scans that had been done in the past year or year and a half. He was happy to answer all questions that I had as well.

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February 17, 2026

5.0

Compete trust and confidence in Dr Mazhar.

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February 16, 2026

5.0

Knowledgeable, excellent medical professional with exceptional communication skills

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February 13, 2026

5.0

He is patient and very intelligent; responds quickly

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February 11, 2026

5.0

Did my upper endoscopy, and I came out not feeling any soreness in my esophagus, which was not the case in my first endoscopy somewhere else. Thank you!

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February 09, 2026

5.0

Very friendly and knowledgeable physician

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February 07, 2026

5.0

Spoke with me prior to the scope and after. Explained everything well. Did not seem rushed. Took his time

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February 06, 2026

5.0

Took time explaining the procedure and listening to any questions and concerns.

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February 05, 2026

5.0

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February 02, 2026

5.0

He's excellent

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February 02, 2026

5.0

Very nice, talked to me before and after the procedure and did a great job

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January 27, 2026

5.0

Great bed side manner

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January 27, 2026

5.0

Dr. Mazhar is very relatable and very thorough.

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January 15, 2026

5.0

He was very patient and listened me well.

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January 13, 2026

5.0

Dr. Mazhar is the best Dr I have ever had. He is intelligent, he explains everything and does not rush through an appointment, he is kind and understanding and he listens. I trust him and glad he is my doctor.

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January 09, 2026

5.0

Dr Mazhar is very experienced and thorough. He takes time to communicate.

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January 05, 2026

5.0

He is patient, very open to discuss results and any issues. He and his staff follow through after the Colonoscopy/Endoscopy. Very easy to discuss my care. He is thorough and explains everything. Answers questions

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January 05, 2026

5.0

I recommend Dr. Mazhar because he is professional, knowledgeable, and truly listen. They explain things clearly, answer questions patiently, and I felt confident in the care plan.

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January 02, 2026

5.0

He came to introduce himself and to explain what will take place. After the procedure, he reviewed the results.

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December 30, 2025

5.0

Very good on taking care of me

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December 29, 2025

5.0

Professional and congenial

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December 22, 2025

5.0

Personable, knowledgable and thorough with explanations & information provided.

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December 22, 2025

5.0

Excellent in every way

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December 22, 2025

5.0

Very knowledgeable and caring

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December 22, 2025

5.0

Great communicator

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December 22, 2025

5.0

The Doctor explained everything he was going to do.

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December 19, 2025

5.0

Professional. Answers all questions very clearly

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December 16, 2025

5.0

Dr. Mazhar was thorough and explained everything to me.

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December 09, 2025

5.0

He's very personable.

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December 02, 2025

5.0

Very clear communicator, great demeanor, reassuring, seems very thorough

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December 01, 2025

5.0

Dr Mazhar is the smartest and sweetest doctor

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December 01, 2025

5.0

He really cares about his patients.

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November 29, 2025

5.0

Dr. Mazhar was very informative. Answered my questions prior to and after the colonoscopy procedure.

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November 28, 2025

5.0

Entered shortly before my procedure. Pleasant voice and easy mannerisms calmed any anxiety.

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November 28, 2025

5.0

Great physician with superior bedside mannerisms!

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November 26, 2025

5.0

I have been seeing Dr. Mazhar now for a few years. Is a wonderful doctor you can tell he cares he tells you exactly what's going on and explains things. If you don't understand, he likes you to ask questions. I would let anybody know to go to him because he is a wonderful doctor.

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November 23, 2025

5.0

Good and professionalism doctor

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November 21, 2025

5.0

I have been under the care of Dr. Mazhar for a few years. He is a vey competent Doctor and exudes confidence.

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November 21, 2025

5.0

Addressed problems

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November 17, 2025

5.0

He is nice plus involved you in your care

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November 13, 2025

5.0

Very good doctor.

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November 08, 2025

5.0

Exceptional doctor

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November 07, 2025

5.0

Dr.Mazhar is very knowledgeable and thorough. He is patient and listens carefully.

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November 02, 2025

5.0

He is very compassionate and a great doctor who takes the time to answer all your concerns

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November 01, 2025

5.0

He clearly explained everything and gave me excellent care.

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October 31, 2025

5.0

I followed Dr Mazhar from Advocate to Delnor because I think he's an amazing Dr. He will take time to listen and answer questions as well

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October 27, 2025

5.0

He was friendly and took the time to explain my results and gave me a recommendation for moving forward.

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October 24, 2025

5.0

Very professional Dr.

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October 24, 2025

5.0

Dr. Mazhar is very intelligent. He is caring, and professional. He explains everything so that I can understand and doesn't rush through the appointment. I trust him.

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October 21, 2025

5.0

Great Doctor

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October 20, 2025

5.0

He Provides excellent information and care

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October 19, 2025

5.0

Excellent caring doctor

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October 14, 2025

5.0

Dr. Mazhar has a very kind bedside manner.

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October 13, 2025

5.0

He cares about his patients. He explains the issues and the care needed to correct the concerns associated with the issues.

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October 10, 2025

5.0

He was clear and to rhe point. Made me feel comfortable.

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October 03, 2025

5.0

Dr.Mazhar was extremely thorough and knowledgeable.

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September 30, 2025

5.0

Very professional and personal visit. I was listened to and respected.

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September 26, 2025

5.0

He listens. He explains. He is caring and kind. You never feel like he is rushing to get to his next patient. He has a great sense of humor!

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September 25, 2025

5.0

Great communicator and clinician. Wonderful bed side manners!

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September 23, 2025

5.0

Good doctor

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September 22, 2025

5.0

Doctor Mazhar was took time to talk to me and look over my records and was so so helpful. He's probably won the best doctors I have ever been to.

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September 20, 2025

5.0

Great dr. Put me at ease.

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September 14, 2025

5.0

He explains things well and is very patient.

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September 08, 2025

5.0

He's smart and kind!

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September 08, 2025

5.0

Excellent communication skills. Very knowledgeable as well.

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September 08, 2025

5.0

Very caring and knowledgeable doctor

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September 06, 2025

5.0

Dr. Mazhar took the time to walk me through everything, and he was very responsive after the proceedure and with my results.

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August 29, 2025

5.0

He is an excellent doctor.

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August 26, 2025

5.0

Dr. Mahzar is a great Dr. He is attentive and has a great bedside manner.

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August 25, 2025

5.0

He is articulate, caring and efficient.

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August 24, 2025

5.0

The procedure was more difficult to perform than expected. Dr. Mazhar's valiant efforts were greatly appreciated. His explanation after the procedure was clearly presented.

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August 24, 2025

5.0

Dr listened, treated me like a person, not a quick appointment. Very timely responses to messages. Answered all my questions and took my symptoms seriously.

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August 20, 2025

5.0

Upon my initial consultation, I was profoundly impressed by Dr. Mazhar. As my third Gastroenterologist_the first having retired, and the second having changed practices_Dr. Mazhar's expertise was immediately apparent. He articulated procedures with remarkable clarity, identified potential issues that might arise during my scheduled appointment, and comprehensively addressed all my inquiries. His knowledge within his medical field is undeniably exceptional. I consider myself remarkably fortunate to have discovered Dr. Mazhar, whose empathy and professionalism are of the highest caliber. I departed his office feeling entirely reassured.

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August 13, 2025

5.0

Dr. Mazhar has treated me in the past, before he moved to Northwestern, and I was very pleased with his care. He was also very attentive at my recent appointment; I appreciated it.

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August 12, 2025

5.0

Informative, not rushed and friendly.

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August 09, 2025

5.0

Dr. Mazhar came to see me before and after my procedure, gave me notes to take home after the procedure and emailed the biopsy results to me. I couldn't ask for more.

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August 07, 2025

5.0

An intelligent and caring doctor...absolutely stellar doctor in every way

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August 02, 2025

5.0

Professional, courteous, and thorough.

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July 22, 2025

5.0

Because he's a very professional doctor. He gives clear explanations and clears up any questions. Above all, he's very kind to me. Thank you, Dr. Sameer Mazhar.

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July 19, 2025

5.0

Dr. Mazhar asked questions, was concerned about my condition and spent time with me. I did not feel uncomfortable or rushed.

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July 17, 2025

5.0

Dr. Mazhar was courteous and professional with his care. I felt confident that he would give me good care and he did. I would definitely choose Dr. Mazhar to do my next colonoscopy.

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July 15, 2025

5.0

I am so happy I found this provider. With all my interactions, I felt confident in the choice. I did not feel rushed with the time with the doctor. All questions were answered thoroughly and I felt confident in my care.

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July 15, 2025

5.0

Good communication. Proficient staff. Supportive doctors.

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July 09, 2025

5.0

Simply one of the best doctors I ever had

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July 09, 2025

5.0

Knowledge, expertise, kindness and how through he is.

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July 03, 2025

5.0

Dr. Mazhar shows great concern for my well being.

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July 03, 2025

5.0

Dr Mazhar always takes the time to answer questions and to explain my condition clearly and understandably. He never makes me feel that he is in a rush.

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July 02, 2025

5.0

I have had Dr. Mazhar for many years. He is known to be excellent and that has been my experience. He always explains clearly and is very good about follow up.

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June 30, 2025

5.0

He is very easy to talk to explains very well. You can tell he is very concerned about his patients!!

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June 30, 2025

5.0

Very knowledgeable, professional, caring, takes time with patients, explains everything very well

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June 29, 2025

5.0

Dr. Mazhar explained everything very well.

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June 24, 2025

5.0

Very knowledgeable

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Disclosures

Sameer M. Mazhar, 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.

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