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Justin Tretter, MD

Justin Tretter, MD
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Department Pediatric Cardiology
Primary Location Cleveland Clinic Main Campus
Type of Doctor Children & Adolescents Only
Languages English
Surgeon No
Cleveland Clinic Main Campus
Primary Location

Cleveland Clinic Main Campus


Additional Locations

Specialties & Treatments

Treatment & Services

  • Department of Pediatric Cardiology and CT Surgery
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About Justin Tretter, MD

Justin Tretter is a staff pediatric cardiologist in the department of Pediatric Cardiology, Professor of Pediatrics at Cleveland Clinic Lerner College of Medicine, Director of Advanced Cardiac Imaging for the Pediatric and Adult Congenital Heart Center, Co-Director for the Congenital Valve Procedural Planning Center, and Director of Cardiac Morphology for both the Pediatric and Adult Congenital Heart Center and Heart, Vascular and Thoracic Institute. Dr. Tretter completed his fellowship in pediatric cardiology at New York University followed by advanced cardiac imaging training at Cincinnati Children’s Hospital Medical Center. As Director of Advanced Cardiac Imaging he is an expert in three-dimensional echocardiography, cardiac magnetic resonance imaging, cardiac computed tomographic imaging, three- and four dimensional reconstructions and other advanced imaging techniques used for personalization of interventional and surgical planning. This personalized, advanced planning is made possible by Dr. Tretter’s unique additional training as a cardiac morphologist under the mentorship of world-renowned cardiac morphologist, Professor Robert Anderson in London. He has additionally undergone training at the Cleveland Clinic in adult acquired cardiac computed tomography in order to better serve his patients from birth to old age.

Dr. Tretter’s clinical and research focus has led to the development of imaging techniques specific in personalizing surgical planning for aortic valve disease. As co-Director, alongside the congenital cardiac surgeon Dr. Hani Najm, of the Congenital Valve Procedural Planning Center, Dr. Tretter and Dr. Najm use cutting edge three- and four-dimensional imaging techniques based on very detailed understanding of heart structure and function in personalize interventional and surgical procedures for both children and adults with various forms of congenital valve disease. Dr. Tretter’s outpatient clinic caters to this center.

Dr. Tretter has published over 120 peer reviewed articles with research interests in translational (cardiac anatomical, developmental, computational modeling) and clinical (cardiac imaging and surgery) research primarily related towards understanding detailed cardiac structure and function relevant in personalized interventional and surgical planning of both congenital and acquired heart disease in children and adults. Dr. Tretter also participates in imaging-focused outcomes-based research in pediatric and adult congenital heart disease and advanced functional imaging techniques correlated to outcomes in pediatric and congenital heart disease. He is an editor or section editor for multiple journals in the field of pediatric cardiology, adult cardiology and cardiothoracic surgery.

Dr. Tretter is the founder and former editor-in-chief of Heart University, one of the most popular educational platforms used globally by both providers and trainees in congenital heart disease. He continues to be avidly involved in education, being a frequent speaker in national and international meetings, and on other online educational platforms such as Congenital Heart Academy and the World University for Pediatric and Congenital Heart Surgery, along with being on the Global Council for Education of Congenital Cardiac Surgeons. He has written numerous book chapters, including being the Editor-in-Chief for the upcoming edition of Anderson’s Pediatric Cardiology, one of the main textbooks in the field of Pediatric Cardiology.

Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Fellowship - Cincinnati Children's Hospital
Advanced Training in Non-invasive Imaging
Cincinnatii, OH USA

Fellowship - New York University Medical Center
Pediatric Cardiology
New York, NY USA

Residency - University of Rochester Medical Center
Rochester, NY USA

Medical Education - St. Georges University School of Medicine
St. George's, Grenada

Undergraduate - Grove City College
Molecular Biology
Grove City, PA USA


  • Pediatrics
  • Pediatrics - Pediatric Cardiology
Research & Publications

Research & Publications

See publications for Justin Tretter, 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 6/5/2023, Dr. Tretter 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.

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