Ian S. Katznelson, MD

Ian S. Katznelson, MD

4.9 
1582 ratings  Read Reviews
Northwestern Medicine logoNorthwestern Medical Group

Primary Specialty

Neurology

Secondary Specialty

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Education

Medical Education:
MD, Northwestern University Feinberg School of Medicine - 1998
Internship:
McGaw Medical Center of Northwestern University - 1999
Residency:
Washington University/B-JH/SLCH Consortium - 2002
Fellowships:
Rush University Medical Center - 2003

Board Certifications

  • American Board of Psychiatry and Neurology - Clinical Neurophysiology (Certified)
  • American Board of Psychiatry and Neurology - Neurology (Certified)
  • American Board of Psychiatry and Neurology - Sleep Medicine (Certified)

Faculty Profile

Clinical Assistant Professor, Feinberg School of Medicine

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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

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 

1582 Ratings

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Reviews from Patients

100 Most Recent Reviews

Reviews from Patients

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100 Most Recent Reviews

April 29, 2025

5.0

He was thorough in explaining the results of my husbands MRI and PET scans. He was very helpful in ordering more tests to make sure that everything is covered for his health plan. I feel that Dr Katznelson is very attentive to our issues and is guiding us with a good plan.

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April 29, 2025

5.0

He's friendly and thorough

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April 29, 2025

5.0

He was very thorough with my appointment

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April 28, 2025

5.0

Outstanding caring physician

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April 28, 2025

5.0

Listens to concerns explains issues and genuinely cares.

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April 22, 2025

5.0

Dr. Katznelson is extremely qualified as a TOP Neurologist !

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April 22, 2025

5.0

Like I said the doctor took his time and explain everything to me

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April 22, 2025

5.0

personal professional service/treatment!

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April 21, 2025

5.0

Concerned, knowledgeable

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April 21, 2025

5.0

Again he is outstanding. He made me feel comfortable as a new patient. He is through in his exam and communicates test results in my chart quickly. I'm certain that the tests he has ordered will help define my path forward.

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April 17, 2025

5.0

He's excellent

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April 17, 2025

5.0

Above comment and listens deeply.

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April 14, 2025

5.0

He is detailed oriented and very knowledgeable . Listens to my concerns. Explains everything well. Easy to talk too.

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April 14, 2025

5.0

He kind and listened

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April 13, 2025

5.0

He is very professional and knowledgeable

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April 07, 2025

5.0

Dr.k. Spends as much time as you need to ask questions and explain procedures.

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March 31, 2025

5.0

He has good manner ,and take a good care of his patients he know what he is doing

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March 26, 2025

5.0

He asks lots of questions.

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March 24, 2025

5.0

I believe Dr, Katznelson is a great Dr. easy to talk to, answers all your questions, and gives you what is best for you.

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March 21, 2025

5.0

Very understanding

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March 18, 2025

5.0

I have been seeing Dr. K. for about 8 years, and he has paid unbelievable details to all my never-ending medical problems.

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March 18, 2025

5.0

He is patient, kind, explains everything.

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March 17, 2025

5.0

10

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March 16, 2025

5.0

Encourages questions and explains carefully. I feel he is through and an expert.

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March 13, 2025

5.0

Hi is a great doctor. He is listening to me and solving my problem

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March 10, 2025

5.0

He has a scientific approach based on fact and logic. His empathy comes through in diagnosis and treatment that help the patient.

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March 10, 2025

5.0

Caring & understanding doctor

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March 09, 2025

5.0

Dr Katznelson is a good listener which is one of the most important attributes of a good doctor. His examinations are very thorough and professional.

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March 05, 2025

5.0

Knowledgeable , experienced and attentive doctor

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March 05, 2025

5.0

He listens well, explains everything in detail and spend enough time with me.

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March 04, 2025

5.0

Very thorough. Listens to questions and provides thoughtful responses.

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March 03, 2025

5.0

Dr Katznelson is intelligent and thorough but also kind and attentive . He leaves no stones unturned and is passionate about my care. I appreciate him very much . He's the best. Clone him! 10 stars * ** on a scale of 1-5 Thanks Pat Bartlett

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February 25, 2025

5.0

Dr. Katznelson is the best!

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February 21, 2025

5.0

Bright, careful and conservative approach to patient care

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February 18, 2025

5.0

Feel very lucky to have him as my Dr

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February 17, 2025

5.0

as I said in the other message he took his time with us and explained everything fully.

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February 16, 2025

4.0

Very respectful and attentive

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February 14, 2025

5.0

He is thorough, knowledgeable, and very approachable.

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February 14, 2025

5.0

Dr. Katznelson has a delightful manner and a marvelous way of taking his patients through every step of their evaluation. In a short time, I had found myself having complete trust in his judgment.

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February 11, 2025

5.0

Very detailed doctor.

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February 04, 2025

5.0

Pretty good treatment and courtesy

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February 03, 2025

5.0

Dr. Katznelson is thorough and caring.

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January 31, 2025

5.0

Takes time and explains everything

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January 30, 2025

4.0

I have only seen him one time so far. I liked him.

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January 30, 2025

5.0

He is very busy, long wait for appointments, I made mine today for January 2026

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January 28, 2025

5.0

He is very knowledgeable, and very personable.

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January 24, 2025

5.0

Dr. Katznelson is super kind and professional. Very easy to talk to.

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January 23, 2025

5.0

Very professional and kind!

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January 15, 2025

5.0

He listens and explains things well

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January 14, 2025

5.0

He is amazing doctor because he is very patient and kind, he was so attentive. Doctor Katznelson tries his best to solve my sleeping problems accurately, so I am highly appreciated for him.

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January 11, 2025

5.0

Very kind and excellent communication

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January 08, 2025

5.0

Dr. Katznelson is a wonderful and empathetic doctor who listens to my concerns and helps to provide realistic and practical solutions.

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January 06, 2025

5.0

He is very caring and knows

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January 02, 2025

5.0

Takes care of all my needs. Good communication

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December 31, 2024

5.0

Very nice. Didnt dismiss my insomnia. Knowledgable and explained things well.

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December 27, 2024

5.0

He answered all of my questions and explained everything thoroughly

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December 18, 2024

5.0

Covers all the bases. Great care and great doctor

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December 17, 2024

5.0

Attentive to my concerns and thorough in his analysis. Made excellent recommendations. Ordered further tests. Let me know that we would continue to dialogue even before a next scheduled appointment. Felt confident that he would help me pursue relief to symptoms where possible.

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December 16, 2024

5.0

Dr. Katznelson is an exceptional doctor. He is very thorough, checks everything, explains everything. Very kind and personable. He really wants to get to the source of any problem. He is a really good communicator. I cant say enough good things about him. Highly recommend

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December 13, 2024

5.0

Excellent physician who is thorough and thoughtful.

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December 13, 2024

5.0

Excellent, kind, intelligent doctor! He is the BEST.

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December 13, 2024

5.0

He was very good at troubleshooting symptoms.

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December 10, 2024

5.0

Understanding and helpful

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December 10, 2024

5.0

The best

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December 09, 2024

5.0

Excellent Service!

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December 04, 2024

5.0

Competent, listens and doesn't rush the appointment.

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December 02, 2024

5.0

He was excellent, thorough, took his time, explained everything and laid out a plan.

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November 24, 2024

5.0

He is kind and straight forward in his questions and chatting.

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November 24, 2024

5.0

Answers questions clearly Explains information well Willing to thoroughly explore possible causes for disease/medical condition

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November 22, 2024

5.0

Great rapport, easy to talk to, great advice

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November 21, 2024

5.0

Dr Katznelson was very professional, knowledgeable and caring. He took the time to listen to my issues and seemed concerned about me. I would recommend him to anyone looking for neurological care.

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November 19, 2024

5.0

Takes time for each appointment

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November 18, 2024

5.0

Very bright

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November 16, 2024

5.0

He is very professional and knowledgeable

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November 15, 2024

5.0

His exam is complete and detailed. He has a pleasant disposition.

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November 12, 2024

5.0

Listens well, knowledgeable, caring

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November 06, 2024

5.0

I think Dr. Katznelson has a great manner about him and has my interests at heart. He listens to my input and makes fact-based decisions.

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November 04, 2024

5.0

He is very personable and shows a genuine interest and concern about his patients.

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November 04, 2024

5.0

Excellent treatment and explanation

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November 01, 2024

5.0

Concerned

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October 31, 2024

5.0

Takes his time examining, answers all questions. Really believe he knows his stuff.

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October 30, 2024

5.0

Knowledgeable professional thorough and friendly

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October 28, 2024

5.0

Dr. Katznelson is the most thorough of all my docs. He's personable, professional and is entirely focused on solving my problems when he's with me. I also appreciate that he is available when things pop up like the insurance needing extra appeals for my medicine and etc.

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October 25, 2024

5.0

Excellent provider!

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October 25, 2024

5.0

Outstanding service!

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October 24, 2024

5.0

He is a caring physician.

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October 24, 2024

5.0

He is professional, and he cares about how you are doing. Answers questions you might have with your condition and treatment. Have been his patient from the very beginning of his career.

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October 24, 2024

5.0

He is a very caring doctor in all ways. I have been going to him for a very long time. It is years already.

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October 23, 2024

5.0

knowledgeable detail oriented professional

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October 21, 2024

5.0

Outstanding thoughtful physician

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October 20, 2024

4.0

I felt the doctor was engaged and cared.

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October 19, 2024

5.0

Concerned, knowledgeable

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October 19, 2024

5.0

Knowledgeable and understanding. Listens to my concerns and answers all of my questions.

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October 17, 2024

5.0

His expertise and explanatory skills.

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October 16, 2024

5.0

Competent, patient, and informative

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October 16, 2024

5.0

outstanding doctor, thorough, caring and smart. his assistant Annette is the best I've experienced.

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October 16, 2024

5.0

He listens and gently guided me towards making the best decision for my daughter, [name] (mom, [name], filling this out.)

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October 16, 2024

5.0

Very nice and listened

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October 15, 2024

5.0

Reporting advances on brain issues

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October 14, 2024

5.0

Dr. Katznelson is a great doctor. He is knowledgeable, trustworthy, professional, and kind. He is an excellent Neurologist!

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Disclosures

Faculty member received compensation for medical record consultation and/or expert witness testimony.

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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HealthBeat

Almonds in a white bowl with a yellow background.

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Nature’s nightcaps.

Person sitting at a desk holding bridge of nose as if tired.

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