John J. Friedewald, MD

5.0 
191 ratings  Read Reviews
Northwestern Medicine logoNorthwestern Medical Group

Primary Specialty

Nephrology

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Practice Focus Areas

This medical professional has a particular interest or expertise in:

Education

Medical Education:
MD, Columbia University Vagelos College of Physicians and Surgeons - 1998
Residency:
Johns Hopkins University - 2001
Fellowships:
Johns Hopkins University - 2003

Board Certifications

  • American Board of Internal Medicine - Internal Medicine (Certified)
  • American Board of Internal Medicine - Nephrology (Certified)

Faculty Profile

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:
Northwestern Memorial 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

5.0
5.0 

191 Ratings

Reviews from Patients

19 Reviews

Reviews from Patients

19 Reviews

April 28, 2025

5.0

JJF has been caring for me about 12 years. I'm doing well under his care.

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April 15, 2025

5.0

Great doctor. Very professional and knowledgeable. Cares for his patients.

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April 07, 2025

5.0

Always engaged and concerned.

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March 20, 2025

5.0

He always communicates clearly with me. He provides me the best, most timely and compassionate medical care that he can. But when it comes to masking, he (and anyone he brings with him) should always remember to wear an n95 mask for my protection, at least to show respect for my reasonable concerns about avoiding contracting hospital acquired infections. Staff are willing to accommodate my request in the suburbs, and my PCP wouldn't even consider entering a room I am in without wearing an n95 mask. She considers it a matter of courtesy now that she knows my concerns.

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February 18, 2025

5.0

He's the best

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February 14, 2025

5.0

He explained the procedure, answered questions and was caring during the procedure.

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February 14, 2025

5.0

Very knowledgeable, attentive and friendly.

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January 30, 2025

5.0

unhurried, caring, beyond knowledgable with clear explanation, questions answered.

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December 19, 2024

5.0

Probably the best Dr I've ever seen

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December 19, 2024

5.0

The BEST doctor!!!!

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December 05, 2024

5.0

Professionalism and knowledge.

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December 04, 2024

5.0

Very patient-centered very caring informative answered all questions clearly

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December 04, 2024

5.0

Smart, great bedside manner, very knowledgeable

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December 02, 2024

5.0

Why he is a very good doctor in every sense of the word

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November 13, 2024

5.0

His very professional responsible and most of all knowledgeable

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November 11, 2024

5.0

He is an excellent doctor, knowledgeable, very professional and have a pleasing personality.

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October 31, 2024

5.0

Great knowledge coupled with a great personality. Awesome comb!

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September 16, 2024

5.0

Outstanding physician

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September 09, 2024

5.0

Great surgeon a great doctor does the great transplant

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Disclosures

Industry Relationships

Ownership or Investment Interest

Faculty member and/or their immediate family have an ownership or investment interest in the following companies

  • Transplant Genomics (a Eurofins company)

Consulting

Faculty member and/or their immediate family have engaged in activities such as speaking, advising, consulting, or providing educational programs for the following companies or other entities

  • Mallinckrodt LLC
  • Medical University of South Carolina
  • Sanofi
  • Transplant Genomics (a Eurofins company)
  • UpToDate, Inc.

Royalties

Faculty member and/or their immediate family have the right to receive payments or may receive future financial benefits for inventions or discoveries related to the following companies or other entities

  • Transplant Genomics (a Eurofins company)

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.