Treatment & Services
- Cardiovascular Imaging
- Cardiovascular Imaging Section
- Cardiovascular Medicine Department
- General Cardiology
- Heart Imaging
- Non-Invasive Diagnostic Testing
- Pericardial Diseases Center
- Stress Testing
Specialty in Diseases & Conditions
- Aorta Disease
- Aortic Aneurysms
- Aortic Occlusion (blockage)
- Aortic Regurgitation
- Aortic Stenosis
- Atherosclerosis (vascular)
- Atrial Septal Defects
- Cardiovascular Disease
- Cardiovascular Risk Prevention
- Congenital Valve Disease
- Coronary Artery Disease
- Heart Attack
- Heart Disease
- Heart Murmur
- Heart Related Illnesses
- Heart Valve Disease
- Heart Valve Infections
- High Cholesterol
- Hypertension - High Blood Pressure
- Marfan Syndrome
- Mitral Valve Prolapse
- Mitral Valve Regurgitation
- Mitral Valve Stenosis
- Pericardial Cyst
- Pericardial Disease
- Pericardial Effusion
- Pulmonary Valve Disease
- Pulmonary Valve Stenosis
- Restrictive Cardiomyopathy
- Rheumatic Heart Disease
- Tricuspid Valve Disease
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Education & Professional Highlights
Education & Fellowships
Fellowship - Massachusetts General Hospital
Boston, MA USA
Fellowship - Boston Medical Center
Boston, MA USA
Residency - University of Michigan Health System
Ann Arbor, MI USA
Internship - University of Michigan Health System
Ann Arbor, MI USA
Medical School - University of Cincinnati College of Medicine
Cincinnati, OH USA
Undergraduate - Harvard University
Cambridge, MA USA
- Advanced Clinical and Research Fellow, Cardiac Ultrasound Laboratory, Massachusetts General Hospital, Harvard Medical School, Boston, Mass., 1982-1984
- Co-Investigator, Everest II Trial, of percutaneous edge-to-edge repair of mitral regurgitation
- Co-Investigator, Partner Trial, of percutaneous aortic valve replacement
- Co-Investigator, Revival Trial, of transcatheter aortic valve replacement using the per-apical approach
- Co-Investigator, Post Coronary Artery Bypass Graft Clinical Trial (Post CABG Trial)
- Cardiovascular Study Section, Institutional Review Board, Cleveland Clinic, 1987-1996
- Internal Medicine
- Internal Medicine - Cardiovascular Disease
Mitral and Aortic Valve Problems, Cardiac Valve Disease - Diagnosis and Therapy, Valve repair, Transesophageal and Transthoracic Echocardiography, Imaging for Transcatheter Interventions, Endocarditis, Pericardial Disease, Cardiovascular Imaging, Cardiac tumors.
Awards & Honors
- Kaiser-Permanente Teaching Award for Basic Science Education, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, 2007
- America’s Top Doctors, Castle Connolly Medical Ltd., New York (peer selection from nationwide survey of 200,000 doctors), 2001-2007
- Top Docs, Northern Ohio Live magazine, 2007
- Best Doctors in America for Cleveland, Cleveland magazine, 1998, 2002-2006
- Best Doctors in America, Consensus Support of Peers Survey Best Doctors, Inc. Woodward White Press, Aiken, S.C., 1994, 2005
- Guide to America’s Top Physicians, Consumers’ Research Council of America, Washington, D.C., 2004-2005
- Champion, Echo Jeopardy, American Society of Echocardiography, 15th Annual Scientific Sessions, San Diego, Calif., 2004
- The Best Doctors in the Midwest for Echocardiography, Survey of Medical Specialists, Woodward White Press, Aiken, S.C., 1998
Innovations & Patents
- Intraoperative echocardiography
- Transesophageal echocardiography
- Understanding the mechanism of mitral regurgitation to enable mitral valve repair
- Understanding the mechanism of aortic regurgitation to enable aortic valve repair
- Echocardiography in transcatheter (percutaneous) repair for mitral regurgitation
- Echocardiography in transcatheter (percutaneous) aortic valve replacement femoral or apical
- Fellow, American Society of Echocardiography (FASE)
- Fellow, American College of Cardiology (FACC)
Research & Publications
(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.)
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 6/20/2016, Dr. Stewart has reported no financial relationship with industry that is applicable to this listing. 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.
116 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.
|Courtesy, Respect & Concern||4.9|
|Knows Medical History||4.9|
|Time Spent with Patient||4.9|
|Patient Rating of Doctor||4.8|
16 Patient Comments
Reviewed on Feb 1, 2017
Dr. Stewart is the best for me and my health problems.
Reviewed on Dec 22, 2016
Dr. Stewart made a dosage adjustment to one of my medications. This new perscription was immediately sent to my local pharmacy and was available for pick-up as soon as I arrived home from my appointment.
Reviewed on Nov 22, 2016
Very good exam and meeting with the Doctor!
Reviewed on Nov 22, 2016
we had no problems. good visit
Reviewed on Oct 27, 2016
Very thorough explainations
Reviewed on Oct 21, 2016
OVERALL, EXCELLENT. THE THREE TESTS WERE DONE ON TIME AND QUICKLY. THE APPOINTMENT WITH DR STEWART WAS EXCELLENT. HE SPENT AN HOUR AND HALF WITH ME, MY WIFE AND DAUGHTER. I WILL DEFINITELY COME BACK TO SEE HIM FOR TREATMENT OF MY CONDITION.
Reviewed on Oct 6, 2016
If all doctors were as professional and truly sensitive like Dr. William Stewart the World would be a better place ! He is one in a million........................
Reviewed on Oct 6, 2016
Professional and respectful.
Reviewed on Sep 20, 2016
we had no bad experience any time while we were there 1st Class
Reviewed on Jul 21, 2016
We have been to Cleveland Clinic for treatment of my husband in the past. This time, it's my turn. We were not disappointed. all went as expected with my first visit. Thank you!
Reviewed on Jul 14, 2016
Dr. Stewart has been thorough at each of my annual visits. He takes into consideration the whole person (me in this case) as it relates to my heart issues. Dr. Stewart is not the only cardiologist I have seen but he is the one I have chosen to work with because of the care he provides.
Reviewed on Jul 12, 2016
I was asked if I had any questions several times. I was able to understand my medical issues.
Reviewed on Jun 16, 2016
All is good.
Reviewed on Apr 12, 2016
Dr Stewart is an excellent, caring doctor. Love working with him
Reviewed on Mar 31, 2016
Dr. Stewart is truly excellent. Thank you.
Reviewed on Mar 23, 2016
instructions were good
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