John P. Flaherty, MD

John P. Flaherty, MD

4.9 
203 ratings  Read Reviews
Northwestern Medicine logoNorthwestern Medical Group

Primary Specialty

Infectious Disease

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Practice Focus Areas

This medical professional has a particular interest or expertise in:

Education

Medical Education:
MD, University of Illinois at Chicago College of Medicine - 1983
Residency:
University of Iowa Hospitals and Clinics - 1986
Fellowships:
University of Chicago - 1987

Board Certifications

  • American Board of Internal Medicine - Infectious Disease (Certified)
  • American Board of Internal Medicine - Internal Medicine (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

4.9
4.9 

203 Ratings

Reviews from Patients

22 Reviews

Reviews from Patients

22 Reviews

April 24, 2025

5.0

I received all the answers from the questions i asked the doctor.

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April 04, 2025

5.0

I've been seeing him for over 25 years.

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March 17, 2025

5.0

He is superb_-careful, quiet but listens carefully and answers questions, extensive experience that younger doctors cannot provide.

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March 04, 2025

5.0

He's some that really care about his peoples.

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March 02, 2025

5.0

He explained everything and was very exact. I was very impressed with his explanation of my condition.

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February 19, 2025

5.0

Genuine concern for patient

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February 18, 2025

5.0

He shows he really cares

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January 19, 2025

5.0

excellent doctor

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December 24, 2024

5.0

Dr Flaherty is an expert in his field and has worked wonders with my health!

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December 24, 2024

5.0

excellent service

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December 20, 2024

5.0

He's fantastic

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December 20, 2024

5.0

Dr. Flaherty is very professional and kind. He listens to my concerns and provides me with quality care.

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December 18, 2024

5.0

Thorough and compassionate and didn't feel rushed! Really cares about you and your well-being!

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November 08, 2024

5.0

Dr. Flaherty is an excellent doctor providing care and information while being treated for an infection.

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November 08, 2024

5.0

He's been my Dr. For over 20 years and he's like an Uncle to me

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October 16, 2024

5.0

Kind, Caring, Knowledgeable, Professional!!!

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October 15, 2024

5.0

10

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October 15, 2024

5.0

Dr. Flaherty is the best! He's a great doctor

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October 04, 2024

5.0

He's an expert in the field. Trusted source for 20 years.

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September 25, 2024

5.0

Extremely knowledgeable Reviewed all information Explained in detail Lucky to have him on my team

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September 19, 2024

5.0

Very intelligent, knowledgeable, and thurough.

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September 18, 2024

5.0

Dr. Flaherty is a gem. I don't often have a ton of respect for my doctors but he's a diamond in a sea of sand

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Disclosures

Industry Relationships

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

  • CVS Caremark

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.