Janusz M. Dudek, MD | Northwestern Medicine

Education

Medical Education:: MD, Jagiellonian University Medical College - 1984
Residency:: Louis A Weiss Memorial Hospital - 1995

Languages Spoken

Polish

Board Certifications

American Board of Internal Medicine - Internal Medicine (Certified)

Practice Groups and Affiliations

Medical Group:: Northwestern Medical Group
Alignment Category:: Northwestern Medicine Physician Network
On Medical Staff At:: Catherine Gratz Griffin Lake Forest Hospital

Ratings and Reviews

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Overall Rating

5.0

5.0

2118 Ratings

Reviews from Patients

100 Most Recent Reviews

Reviews from Patients

100 Most Recent Reviews

February 23, 2026

5.0

Always nice suggestion for my condition

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February 17, 2026

5.0

Very smart

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February 16, 2026

5.0

He provides excellent professional care.

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February 16, 2026

5.0

The best doctor ever

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February 15, 2026

5.0

The doctor is always very well prepared for appointments, knows the patient's medical history, and takes the time to conduct a thorough and thoughtful discussion about the patient's well-being. He treats each patient with care and respect, never dismisses concerns, and explains everything clearly. His professionalism, empathy, and kindness make the patient feel truly valued and safe.

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February 14, 2026

5.0

Think he very special.

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February 11, 2026

5.0

Great person and doctor

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February 07, 2026

5.0

Dr Janusz as always answers all my questions, very professional, he is always well prepared for my visit, he gives me good advice for further rehabilitation Thank you

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February 03, 2026

5.0

Best diagnostician I know. He takes the time to understand all your complaints and always has a resolution.

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February 03, 2026

5.0

He is a great doctor.

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February 02, 2026

5.0

Professional !!!

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February 02, 2026

5.0

He is a truly wonderful physician. Is very attentive, takes good notes, follows up with you, deeply cares about his patients.

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January 31, 2026

5.0

Listens carefully, explains medical terms in plain language, and takes time to answer questions. Very professional.

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January 28, 2026

5.0

Great doctor and person. Always taking time to listen. It's like seeing a doctor, friend and sometimes psychologist all in one. Very greatful for Dr Dudek!!!

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January 27, 2026

5.0

Professional! Efficient! Caring! Clean facility!

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January 23, 2026

5.0

Very profesional

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January 23, 2026

5.0

Always prepared for my questions, top class doctor

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January 21, 2026

5.0

Perfect Doktor and staff..

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January 21, 2026

5.0

Quiet knowledge demeanor

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January 19, 2026

5.0

Dr Dudek is great, takes time to explain, listens to any questions or concerns.

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January 18, 2026

5.0

I have recommended him to many

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January 16, 2026

5.0

We knows Dr Dudek for 40 years. Best doctor with tons of experience and precise, accurate diagnosis not mention exceptional pesonality

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January 12, 2026

5.0

A very good doctor. A professional. He knows his craft perfectly.

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January 06, 2026

5.0

Dr.Dudek is a very good doctor.

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January 06, 2026

5.0

He is. Very thurough

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January 03, 2026

5.0

Diagnosed my medical situation immediately and suggested the solution.

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December 29, 2025

5.0

I highly recommend this dr.He is extremely knowledgeable, kind and always takes the time to truly listen to his patients the explaines everything clearly and shows genuine care and concern for my health not just test results.

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December 28, 2025

5.0

Being a senior, he would do will with patients my age.

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December 27, 2025

5.0

Knowledgeable, caring , listens , involves the patient in every decision he makes.

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December 25, 2025

5.0

Very thorough explaining my health issues.

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December 23, 2025

5.0

Very polite, considerate and thoughtful person. He is the best family medicide doctor I had. He checks everything

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December 16, 2025

5.0

Good doctor.

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December 14, 2025

5.0

I didn't feel rushed. He is pleasant and caring.

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December 12, 2025

5.0

Excellent health care doctor.

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December 12, 2025

5.0

Dr. Dudek provided fantastic care.

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December 09, 2025

5.0

Very professional

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December 08, 2025

5.0

Dr. Dudek always explains everything in detail, sharing latest research and updates. He is careful to explore all options for treatment, and listens carefully to me.

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December 08, 2025

5.0

He is the best physician.

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December 06, 2025

5.0

Good doctor

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December 05, 2025

5.0

Dr. Dudek is very thorough up to the point. He's got very good knowledge. I would recommend him to anybody.

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December 03, 2025

5.0

He actually treats you like a person not just "take a number".

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November 24, 2025

5.0

Dr Janusz is always very professional, He patiently answers all my questions.

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November 24, 2025

5.0

Patience

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November 24, 2025

5.0

He is the best doctor.I was very sick now I'm much better because he help me

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November 19, 2025

5.0

Dr.Dudek is very knowledgeable, confident, and skilled at making diagnoses and creating effective treatment plans while also being great listeners who explain things clearly and treat patients with respect.

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November 18, 2025

5.0

Professional approach, listings to your problems, taking time to listen and share his thoughts.

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November 16, 2025

5.0

Thank You.

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November 15, 2025

5.0

doctor Dudek spends time understanding my history and provides recommendations. Also listens well and answers all questions!

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November 14, 2025

5.0

I have been his patient for over 25 years and he always how to help.

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November 14, 2025

5.0

He explains everything. Very thorough and patient . great doctor and human being

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November 13, 2025

5.0

He is very good doctor.

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November 10, 2025

5.0

Makes you feel welcome, easy to talk to.

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November 05, 2025

5.0

Doctor Dudek is to doctor which experience and education

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November 03, 2025

5.0

Excellent Dr.

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November 03, 2025

5.0

This was my first visit with Dr. Dudek. He's kind, listens carefully, and understands my needs. He's the right person in the right place.

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October 31, 2025

5.0

Professional and very experienced doctor!

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October 29, 2025

5.0

He listens to his patients and gives sound advice as to how to solve the problem/ problems.

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October 28, 2025

5.0

Always have time to spend with the patient, explain everything and recommend what is good for the patient.

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October 27, 2025

5.0

His knowledge, and care

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October 26, 2025

5.0

He is really good doctor

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October 26, 2025

5.0

Excellent caring Dr.

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October 24, 2025

5.0

Spent a lot of time with me and was very thorough.

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October 20, 2025

5.0

He gives excellent professional care.

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October 19, 2025

5.0

He is a fantastic Dr. I've been with him for over 20 years and I will continue to use him as my primary care physician

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October 18, 2025

5.0

He's genuinely a caring and excellent doctor.

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October 15, 2025

5.0

He has been Dr for over 20 years and is very in tune with my health.

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October 10, 2025

5.0

Very thorough. Cared about me and my health

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October 09, 2025

5.0

He has a great manner about him & thorough

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October 06, 2025

5.0

I'm so happy with this doctor. He's very professional.

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October 06, 2025

5.0

He is caring and special

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October 03, 2025

5.0

Dr. Dudek is very thorough and takes time to explain any issues. He weaned me off of an addiction to Clonazipin and took me off other drugs I was taking that I had no need for. No other Doctors tried in the past. They just kept prescribing them. This showed me that I was not just a pass through patient, that he actually had my best interest in mind. He has been excellent across the board.

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October 01, 2025

5.0

Doctor Janusz Dudek, MD is very professional , nice, patient and kind

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October 01, 2025

5.0

Dr. Dudek is the absolute best doctor I've ever had. He's extremely knowledgeable and takes the time to answer my questions and concerns and explains everything in detail.

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September 30, 2025

5.0

Caring doctor, professional presentation, warm demeanor to

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September 29, 2025

5.0

His attention to detail is spectacular. He answers all my questions.

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September 29, 2025

5.0

He is very thorough . He takes his time and I'm Happy with him as my doctor.

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September 28, 2025

5.0

Dr. Dudek is an outstanding doctor and knowledgeable professionals. He took care of his patients very well. Thank you very much for his advice and kindness.

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September 28, 2025

5.0

Makes me feel well

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September 27, 2025

5.0

He is an excellent doctor.

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September 27, 2025

5.0

He took plenty of time to listen & explain all my health issues

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September 23, 2025

5.0

VERY GOOD DOCTOR

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September 23, 2025

5.0

Friendly, knowledgeable, and no nonsense. Best doctor ever.

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September 20, 2025

5.0

Very helpful to my needs and following up on my condition

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September 18, 2025

5.0

Generous w his time, clear communicator, easy, comfortable personality & very knowledgeable.

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September 17, 2025

5.0

Dr Dudek is very passionate about his work. Very good listener Very knowledgeable He takes such a good car er of me

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September 15, 2025

5.0

Careful listener, smart and very compassionate

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September 14, 2025

5.0

Kindness and professionalism

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September 12, 2025

5.0

He is a great physician.

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September 09, 2025

5.0

Dr Janusz Dudek, MD is very experience and trustful Doctor.

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September 07, 2025

5.0

Excellent doctor

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August 26, 2025

5.0

Dr. Dudek spends a lot of time with me when I come in for a visit he discusses trends in medicine and healthcareand shares his knowledge Explains things very well he talks to you face-to-face. He doesn't stare at the screen. He orders his labs the day of the appointment and we review them later rather than going them over them together, which allows him to ask more questions during the visit he gives good advice. He is kind, caring, and thoughtful

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August 25, 2025

5.0

Very professional, take a time to explain problems with easy way to understand.

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August 22, 2025

5.0

Knowledgeable, friendly, pragmatic, lives I. The real word, excellent

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August 22, 2025

5.0

He's the Best!

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August 22, 2025

5.0

He is intelligent and listens and really knows his stuff!!!!

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August 22, 2025

5.0

In my opinion, he is the best internal medicine doctor on the planet!

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August 22, 2025

5.0

Knowledgeable and great personality makes you comfortable

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August 21, 2025

5.0

The best doctor coust to coust.

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August 19, 2025

5.0

Dr. Dudek is an excellent doctor, very professional and concerned about his patients.

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August 18, 2025

5.0

He is very professional

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Disclosures

Janusz M. Dudek, 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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