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Department Cardiovascular Medicine
Primary Location Cleveland Clinic Main Campus
Type of Doctor Adults Only
Languages English
Surgeon No
Cleveland Clinic Main Campus
Primary Location

Cleveland Clinic Main Campus

Specialties & Treatments

Treatment & Services

  • Cardiology
  • Cardiovascular Disease Risk Prevention
  • Cardiovascular Medicine
  • Cardiovascular Medicine Department
  • Clinical Cardiology Section
  • General Cardiology
View all 6 Treatment & Services +

Specialty in Diseases & Conditions

  • Aorta Disease
  • Aortic Aneurysms
  • Aortic Regurgitation
  • Aortic Stenosis
  • Aortic Valve Regurgitation
  • Asymptomatic Valve Dysfunction
  • Atherosclerosis
  • Atrial Fibrillation
  • Blocked Arteries
  • Cardiomyopathy
  • Cardiovascular Disease
  • Carotid Artery Disease
  • Coronary Artery Disease
  • Heart Attack
  • Heart Disease
  • Heart Failure
  • Heart Murmur
  • Heart Palpitations
  • Heart Related Illnesses
  • Heart Valve Disease
  • High Blood Pressure (Hypertension)
  • High Cholesterol
  • Hypertrophic Cardiomyopathy
  • Ischemic Cardiomyopathy
  • Metabolic Syndrome
  • Mitral Valve Prolapse
  • Mitral Valve Regurgitation
  • Mitral Valve Stenosis
  • Myocardial Ischemia
  • Pericardial Effusion
  • Pericarditis
  • Premature Ventricular Complexes
  • Shortness of Breath
  • Tricuspid Regurgitation
View all 34 Specialties +


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About John Mansour, MD

John S. Mansour, MD, MBA, is a cardiologist in the Section of Clinical Cardiology in the Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart, Vascular & Thoracic Institute. He sees patients at Cleveland Clinic Main Campus.

In addition to office visits, Dr. Mansour also offers scheduled follow up virtual visits to select patients, through the Cleveland Clinic Express Care ® Online app. This platform allows patients to see their physician live, using their smartphone, tablet or computer.

Specialty Interests: General cardiology, coronary artery disease, dyslipidemia (lipid disorders), structural heart disease, cardiovascular disease, hypertension (high blood pressure)

Number of Patients Treated: Physicians in the Sydell and Arnold Miller Family Heart, Vascular & Thoracic Institute annually perform approximately 10,000 cardiac catheterizations, a minimally invasive procedure for diagnosing and treating heart disease.  Dr. Mansour has performed more than 1,000 cardiac catheterizations in the past three years.

Success Rates: Cleveland Clinic is nationally and internationally renowned for the world’s best cardiovascular care. To learn about patient outcomes for coronary catheterization at Cleveland Clinic compared with outcomes reported at other hospitals, go to http://my.clevelandclinic.org/heart/about-heart-vascular-institute/treatment-outcomes.aspx

Education and Training: After earning a bachelor’s degree in management cum laude from Case Western Reserve University, Cleveland, Ohio, Dr. Mansour went on to earn a Master’s of Business Administration from the Weatherhead School of Management at Case Western Reserve University in 2002 and his medical degree from Case Western Reserve University School of Medicine in 2006. He completed his internal medicine residency and fellowships in cardiovascular medicine and interventional cardiology at University Hospitals Case Medical Center, Cleveland, Ohio. Dr. Mansour was named to the Cleveland Clinic staff in 2016.

About Dr. Mansour: I love practicing cardiology because I feel like it is the most rewarding field in medicine.  We have many treatment options that can help our patients that have a dramatic impact on patients’ lives, both in the acute setting and over the long term.

Leisure Activities: Dr. Mansour enjoys golf, spending time with his wife and daughter and is an avid Cleveland sports fan

Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Fellowship - University Hospitals of Cleveland
Interventional Cardiology
Cleveland, OH

Fellowship - University Hospitals of Cleveland
Cardiovascular Disease
Cleveland, OH

Residency - University Hospitals of Cleveland
Internal Medicine
Cleveland, OH

Medical Education - Case Western Reserve University School of Medicine
Cleveland, OH

Graduate School - Case Western Reserve University Weatherhead School of Management
Cleveland, OH

Undergraduate - Case Western Reserve University School of Medicine
Cleveland, OH

Additional Training

  • Interventional cardiology


  • Internal Medicine - Cardiovascular Disease

Specialty Interests

General cardiology, coronary artery disease, dyslipidemia (lipid disorders), structural heart disease, cardiovascular disease, hypertension (high blood pressure)

Research & Publications

Research & Publications

See publications for John Mansour, MD.

(Disclaimer: This search is powered by PubMed, a service of the U.S. National Library of Medicine. PubMed is a third-party website with no affiliation with Cleveland Clinic.)

Industry Relationships

Industry Relationships

Cleveland Clinic physicians and scientists may collaborate with the pharmaceutical or medical device industries to help develop medical breakthroughs or provide medical expertise or education. Cleveland Clinic strives to make scientific advances that will benefit patient care and support outside relationships that promise public benefit. In order for the discoveries of Cleveland Clinic physicians' and scientists' laboratories and investigations to benefit the public, these discoveries must be commercialized in partnership with industry. As experts in their fields, Cleveland Clinic physicians and scientists are often sought after by industry to consult, provide expertise and education.

To assure professional and commercial integrity in such matters, Cleveland Clinic maintains a program that reviews these collaborations and, when appropriate, puts measures in place to minimize bias that may result from ties to industry. Cleveland Clinic publicly discloses the names of companies when (i) its physicians/scientists receive $5,000 or more per year (or, in rare cases, equity or stock options) for speaking and consulting, (ii) its physicians/scientists serve as a fiduciary, (iii) its physicians/scientists receive or have the right to receive royalties or (iv) its physicians/ scientists hold any equity interest for the physician's/scientist's role as inventor, discoverer, developer, founder or consultant.* In publicly disclosing this information, Cleveland Clinic tries to provide information as accurately as possible about its physicians' and scientists' connections with industry.

As of 4/26/2024, Dr. Mansour has reported the financial relationships with the companies listed below. In general, patients should feel free to contact their doctor about any of the relationships and how the relationships are overseen by Cleveland Clinic. To learn more about Cleveland Clinic's policies on collaborations with industry and innovation management, go to our Integrity in Innovation page.

Public Health Service-Reportable Financial Conflicts of Interest. Cleveland Clinic scientists and physicians engage in basic, translational and clinical research activities, working to solve health problems, enhance patient care and improve quality of life for patients. Interactions with industry are essential to bringing the researchers' discoveries to the public, but can present the potential for conflicts of interest related to their research activities. Click here to view a listing of instances where Cleveland Clinic has identified a Public Health Service (PHS)-Reportable Financial Conflict of Interest and has put measures in place to ensure that, to the extent possible, the design, conduct and reporting of the research is free from bias.

* Cleveland Clinic physicians and scientists subscribe to the guidance presented in the PhRMA Code on Interactions with Healthcare Professionals and the AdvaMed Code of Ethics on Interactions with Health Care Professionals. As such, gifts of substantial value are generally prohibited.

Patient Satisfaction Reviews

220 Patient Satisfaction Reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

Responses are measured on a scale of 1 to 5 with 5 being the best score.

The comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Cleveland Clinic.

Overall Star Ratings
4.9 out of 5
Explains 4.9
Listens 4.8
Courtesy, Respect & Concern 4.9
Patient Rating of Doctor 4.9

21 Patient Comments

Reviewed on Jun 6, 2024

Dr Mansour is very much a true gentleman. Took his time to listen to me, offer his advice, and recommendations. Respected my privacy In examining me. I was very Impressed by him. Same for my husband. He is someone who represents The respect and quality care of Cleveland Clinic.

Reviewed on May 21, 2024

Was an excellent experience from beginning to end by Dr. Mansour, Fellow and Nurses.

Reviewed on May 13, 2024

Dr. Mansour is excellent. I have asked him to check on my wife.

Reviewed on May 7, 2024

Dr Mansour was very kind informative and easy to speak with.

Reviewed on Apr 22, 2024

I understand the Doctors are very busy and it takes some time to work patients into their Schedule .

Reviewed on Apr 1, 2024

Dr. Mansour is a wonderful doctor.

Reviewed on Mar 28, 2024

Excellent Provider! Great Expierence!

Reviewed on Feb 12, 2024

I've recommended Cleveland Clinic to everyone. If I lived closer, it would be my provider of choice for all my care. The cardiology department was fantastic. I almost wish I had more cardiac problems. :)

Reviewed on Feb 8, 2024

Dr. Monsour devoted time to making sure that he heard my concerns and addressed them appropriately. I wish that more of my interactions with doctors would be like the one that I had with him. "Very Good," on the survey, does not do justice to him. Outstanding would be more like it.

Reviewed on Feb 8, 2024

I would very much recommend Dr.Mansour to any of my family and friends.He Is great

Reviewed on Feb 5, 2024

Dr. Mansour is one of the best educated, knowledgeable, and empathetic physicians I have ever seen.

Reviewed on Jan 15, 2024

Dr.Mansour is very knowledgeable In his field and Is aware of current trends and information.

Reviewed on Dec 6, 2023

Dr. Mansour is the best!

Reviewed on Nov 8, 2023

I hold a very good opinion of Dr. Mansour and the folks at the CC!!

Reviewed on Nov 6, 2023

Dr Mansour is super compassionate. He is a fantastic listener and asks great questions too. Really cares.

Reviewed on Oct 9, 2023

Dr. Mansour is excellent.

Reviewed on Sep 18, 2023

Dr. Mansour was very direct with what is best for me.

Reviewed on Aug 31, 2023

Dr. Mansour is an amazing doctor. He always takes the time to talk to me and explain things the way that I can understand. He's kind and caring. I couldn't have a better doctor! I recommend him to everyone I know that has a heart condition! He is so worth the trip from Queen, Pa. To see him at the Cleveland Clinic in Cleveland, Ohio.

Reviewed on Aug 21, 2023

Dr. Mansour is extremely competent, caring, and a good listener.

Reviewed on Aug 16, 2023

Dr. Mansour shows patience, is knowledgeable, and very professional. I feel lucky to have seen him. Very thorough. Thank you.

Reviewed on Jul 26, 2023

We love our Doctor Mansour.

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