James D. Flaherty, MD

4.9

586 ratings Read Reviews

Northwestern Medical Group

Primary Specialty

Interventional Cardiology

Secondary Specialty

Critical Care Medicine

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Practice Website

HealthBeat

First-of-Its-Kind Device Aims to Prevent Sudden Cardiac Death

Northwestern Medicine studies a new technology to treat cardiac arrest as part of a worldwide clinical trial.

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Practice Focus Areas

This medical professional has a particular interest or expertise in:

Angioplasty and Stents
Atherectomy
Cardiac Catheterization
Coronary Artery Chronic Total Occlusion (CTO)
Transcatheter Aortic Valve Replacement (TAVR)
Transcatheter Mitral Valve Therapy
Transcatheter Valve Therapy

Education

Medical Education:: MD, University at Buffalo Jacobs School of Medicine and Biomedical Sciences - 1999
Residency:: McGaw Medical Center of Northwestern University - 2002
Fellowships:: McGaw Medical Center of Northwestern University - 2005

McGaw Medical Center of Northwestern University - 2006

Board Certifications

American Board of Internal Medicine/Advanced Heart Failure-Transplant Cardiology - Advanced Heart Failure & Transplant Cardiology (Certified)
American Board of Internal Medicine/Cardiovascular Disease - Cardiovascular Disease (Certified)
American Board of Internal Medicine/Interventional Cardiology - Interventional Cardiology (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

Palos 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

586 Ratings

Reviews from Patients

75 Reviews

Reviews from Patients

75 Reviews

February 13, 2026

5.0

God used his expertise to open an almost completely blocked artery restoring health and function. I didn't think there was hope because local Doctors couldn't open my LAD. The team at Northwestern did.

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February 10, 2026

5.0

Dr.Flaherty has the best bedside manner,He's professional engaging and inviting.

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February 08, 2026

5.0

Professional

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February 04, 2026

5.0

He is very professional and has a good bedside manner

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February 03, 2026

5.0

Referred me initially for SAVR, is ready and updated with pre appointment exam results.

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January 31, 2026

5.0

He listened and took time conversation asking questions.

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January 26, 2026

5.0

Dr. Flaherty is an exceptional cardiologist--Thoughtful, responsive, clear, and effective. With a challenging condition, he's someone you can have confidence in.

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January 26, 2026

5.0

He's a wonderful caring doctor

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January 24, 2026

5.0

Brilliant compassionate doctor

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January 22, 2026

5.0

Attention to detail, explain all aspects and possibilities!

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January 09, 2026

5.0

His expertise

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January 07, 2026

5.0

He gives good advice for taking care of my heart.

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December 27, 2025

5.0

Probably saved my life

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December 27, 2025

5.0

Years of lifesaving care by Dr. Flaherty. Clear explanation of my condition and he is now a good friend who I trust with my health.

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December 24, 2025

5.0

Very thorough

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December 23, 2025

5.0

He was my surgeon and everything went exceedingly well Never a problem

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December 18, 2025

5.0

Dr Flaherty has been both my interventional and general cardiologist since 2011. He is excellent - always prepared, gets to the point and displays an efficient yet underlying kind manner.

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December 10, 2025

5.0

He was efficient and responsive to questions, so very thoughtful and kind. He is focused on the task at hand and not one for unnecessary chit-chat, but he is an excellent surgeon!

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December 10, 2025

5.0

Extremely knowledgeable and attentive

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December 09, 2025

5.0

Dr. Flaherty came recommended by Dr. Bonow, who I have known and respected for quite some time. He did a great job with my stent.

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December 02, 2025

5.0

He is attentive and makes you feel like family. Great Dr.

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December 01, 2025

5.0

caring and communicative

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December 01, 2025

5.0

Excellent caring fellow doctor. He called me a little while ago to check on me five days after the procedure. Easy going manner but is available to answer questions when needed. Inspires confidence.

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November 26, 2025

5.0

Very knowledgeable and makes sure patient is well taken care of

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November 25, 2025

5.0

He's the best in his field. 100% attention to me

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November 19, 2025

5.0

Ten speaks for itself. Ten is the top. That sums up the care that I recieved

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November 16, 2025

5.0

Professional and answers all my questions

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November 14, 2025

5.0

Knows his calling

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November 05, 2025

5.0

Smooth and easy

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November 04, 2025

5.0

Great Doctor with great skills

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November 04, 2025

5.0

He's a very good doctor

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October 30, 2025

5.0

Explanations are completely easy to understand and they are consistent. Those boys know what they are doing!

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October 11, 2025

5.0

Dr. Flaherty was confident and told me exactly what he was going to perform and easy to understand.

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September 23, 2025

5.0

Dr. Flaherty is very knowledgeable and professional with a great bedside manner.

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September 20, 2025

5.0

His knowledge, compassion and ability to explain things.

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September 17, 2025

5.0

Very friendly and attentive.

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September 12, 2025

5.0

Direct and professional

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September 09, 2025

5.0

Dr. Flaherty not only has current medical cardiovascular treatment knowledge but also took into account me, the individual patient, when considering recommendations.

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September 03, 2025

5.0

Professional, caring, friendly, thorough

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September 03, 2025

5.0

Dr Flaherty is very thorough and listens to patients concerns. He always makes the patients feel comfortable when explaining issues.

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September 02, 2025

5.0

I have a very high confidence in his abilities

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August 27, 2025

5.0

He was very nice and reassuring when he came to talk to me before the procedure. Very kind.

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August 26, 2025

5.0

The doctor is a cardio rock star who somehow remains humble. He also relates well to patients.

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August 21, 2025

5.0

As stated above, he is not my primary Physician, but treated me as though I was his top priority. He also spoke with Dr. [full name] and provided her with information that helped her move forward in my treatment plan. Every time we are at Northwestern, we see teamwork at its best! Everyone is always pulling in the same direction... for patient benefit!

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August 18, 2025

5.0

He too was very kind and gracious, was very straightforward, plus performed a very successful procedure. I am so thankful.

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August 18, 2025

5.0

Painless procedure, explained everything and gave me results quickly.

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August 16, 2025

5.0

He was very kind and answered all of my questions and told me what the plan was for my care. I felt that I could trust him with my care.

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August 14, 2025

5.0

Saved my life.....

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August 12, 2025

5.0

He's kind and cares.- He took the time to look over my tests results and make a plan for my meds that made more sense for me. Really the best of the best/ pure respect for a doctor that cares.

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August 10, 2025

5.0

He is the best in the business

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August 02, 2025

5.0

Professional, put my mind at ease.

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August 01, 2025

5.0

Same as above. Knowledgeable!

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July 16, 2025

5.0

I'm alive!

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July 15, 2025

5.0

Dr. Flaherty is an exemplary interventionist! He speaks with confidence based on test results.He always ask so how have you been doing and means it!

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July 14, 2025

5.0

Extremely knowledgeable and very talented interventional cardiologist. I trust him completely

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July 12, 2025

5.0

Dr. Flaherty is thorough and kind

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July 10, 2025

5.0

Dr. Flaherty is great at what he does knowledgable, great work ethic, determined and professional an occational sense of humor...

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July 08, 2025

5.0

Great bedside manner and extremely knowledgeable.

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July 06, 2025

5.0

I had a really positive experience with Dr. Flaherty. It's always great when a doctor makes you feel comfortable and clearly explains everything, especially when discussing next steps.

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July 03, 2025

5.0

Dr Flaherty was part of my original team so I so I feel totally secure about the outcomes when he is involved

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July 01, 2025

5.0

I trust his advice & care.

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June 24, 2025

5.0

EXPLAINS DIAGNOSIS AND OPTIONS IN EASY TO UNDERSTAND LANGUAGE. INCLUDES PATIENT IN FUTURE TREATMENT OPTIONS. COMPASSIONATE AND CARING. KNOWLEDGEABLE AND PUTS THE PATIENT AT EASE

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June 19, 2025

5.0

didn't get to see him do his magic but as head of the team, delivered great care and results.

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June 18, 2025

5.0

He communicated well with me before and after the procedure

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June 14, 2025

5.0

Dr. Flaherty takes great interest in each of his patients.

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June 10, 2025

5.0

Made time to discuss future plans. Discussed options. Made us aware of the future possibilities and potential problems. Was not in a hurry to get to the next patient.

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June 08, 2025

5.0

I heard the angiogram procedure with a stent placement went well. I am very appreciative and feel very lucky to have had Dr. Flagerty and his team doing the procedure.

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June 07, 2025

5.0

He was responsive and a good surgeon.

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June 07, 2025

5.0

His demeanor, personality and credentials come together, without arrogance, to make you feel secure in your health care decision.

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June 04, 2025

5.0

Very comprehensive and knowledgeable diagnosis and great bedside manner

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June 03, 2025

5.0

Excellence in motion.

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May 13, 2025

5.0

He personable and we talk about the issues that need to be addressed at the time I see him

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May 10, 2025

5.0

Both very knowledgeable and very likable. I totally trust him.

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May 08, 2025

5.0

Dr Flaherty and the Fellow that assisted in my procedure were amazing. Dr Flaherty reviewed the records and images from my hospital where I reside and found a safer procedure with less risk to handle my issue. He is the best of the best! I idolize him!

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May 06, 2025

5.0

He cares for the patient and listens to patients issues, if any, carefully.

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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

Edwards Lifesciences, LLC
Transcatheter Cardiovascular Therapeutics Asia Pacific (TCTAP)

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

First-of-Its-Kind Device Aims to Prevent Sudden Cardiac Death

Northwestern Medicine studies a new technology to treat cardiac arrest as part of a worldwide clinical trial.

More HealthBeat Articles