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Department Thoracic and Cardiovascular Surgery
Primary Location Cleveland Clinic Main Campus
Type of Doctor Adults Only
Languages Croatian, English
Surgeon Yes
Cleveland Clinic Main Campus
Primary Location

Cleveland Clinic Main Campus

Specialties & Treatments

Treatment & Services

  • Aorta Graft
  • Aorta Surgery
  • Aortic Dissection Repair
  • Aortic Valve Repair
  • Aortic Valve Replacement
  • Aortic Valve Surgery
  • Atrial Septal Defect (ASD) Closure
  • Bypass Surgery
  • Cardiovascular Surgery Department
  • Chest Surgery
  • Complex Aorta Surgery
  • Coronary Artery Bypass Graft (CABG) Surgery
  • Coronary Artery Reoperation
  • David Procedure
  • David Reimplantation Operation
  • Endovascular Aorta Treatment - Thoracic
  • Endovascular Surgery
  • Epicardial Lead Placement
  • Extracorporeal Membrane Oxygenation (ECMO)
  • Heart Failure Surgery
  • Heart Surgery for Marfan Syndrome
  • Heart Surgery Reoperation
  • Heart Valve Surgery
  • Infective Endocarditis Surgery
  • Minimally Invasive Aortic Surgery
  • Minimally Invasive Aortic Valve Repair
  • Minimally Invasive Cardiac Surgery
  • Minimally Invasive Cardiovascular Surgeries
  • Minimally Invasive Heart Surgery
  • Minimally Invasive Mitral Valve Repair
  • Mitral Valve Replacement
  • Mitral Valve Surgery
  • Modified David's Reimplantation Procedure
  • Myectomy
  • Off Pump Bypass Surgery
  • Off Pump Heart Surgery
  • Pericardiectomy
  • Pericardium Surgery
  • Pulmonary Embolism Surgery
  • Pulmonary Vein Ablation Procedure
  • Pulmonic Valve Repair
  • Pulmonic Valve Replacement
  • Removal of Atrial Myxoma
  • Removal of Cardiac Tumors
  • Reoperation Surgery
  • Reoperation Valve Surgery
  • Repair of Aortic Aneurysms
  • Surgical Ablation of Atrial Fibrillation
  • Surgical Procedures for Atrial Fibrillation
  • Thoracic Aortic Aneurysm Surgery
  • Tricuspid Valve Repair
  • Tricuspid Valve Replacement
  • Valve Sparing Method
  • Valve Surgery
View all 54 Treatment & Services +

Specialty in Diseases & Conditions

  • Aorta Disease
  • Aortic Aneurysms
  • Aortic Dissection
  • Aortic Occlusion (Blockage)
  • Aortic Regurgitation
  • Aortic Stenosis
  • Atrial Fibrillation
  • Atrial Septal Defects
  • Cardiomyopathy
  • Coarctation of the Aorta
  • Congenital Heart Disease
  • Congenital Valve Disease
  • Connective Tissue Disorders
  • Constrictive-Pericarditis
  • Coronary Artery Disease
  • Dilated Cardiomyopathy
  • Ehlers-Danlos Syndrome
  • Endocarditis
  • Giant Cell Arteritis
  • Heart Attack
  • Heart Disease
  • Heart Failure
  • Heart Murmur
  • Heart Palpitations
  • Heart Related Illnesses
  • Heart Valve Disease
  • Hypertrophic Cardiomyopathy
  • Infective Endocarditis
  • Ischemic Cardiomyopathy
  • Marfan Syndrome
  • Mitral Valve Prolapse
  • Mitral Valve Regurgitation
  • Mitral Valve Stenosis
  • Myxomas
  • Patent Ductus Arteriosus
  • Patent Foramen Ovale
  • Pericarditis
  • Pulmonary Artery Stenosis
  • Pulmonary Embolism
  • Pulmonary Hypertension
  • Pulmonary Valve Disease
  • Pulmonic Regurgitation
  • Pulmonic Stenosis
  • Rheumatic Heart Disease
  • Superior Vena Cava Syndrome
  • Thoracic Aortic Aneurysm
  • Thoracoabdominal Aortic Aneurysm
  • Tricuspid Regurgitation
  • Tricuspid Stenosis
  • Tricuspid Valve Disease
  • Ventricular Aneurysm
  • Ventricular Septal Defects
View all 52 Specialties +


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About Marijan Koprivanac, MD

Marijan Koprivanac, MD, is a staff surgeon in the Department of Thoracic and Cardiovascular Surgery of the Sydell and Arnold Miller Family Heart, Vascular & Thoracic Institute. He is at Cleveland Clinic Main Campus.

Specialty Interests: Adult cardiac surgery; aortic valve and bicuspid valve repair; surgery for thoracic aortic aneurysm and dissection, including endovascular approach; complex aorta surgery and cardiac reoperations; David's reimplantation procedure; cardiac surgery for Marfan’s and other connective tissue disorders; minimally invasive heart surgery; cardiac tumors; endocarditis

Experience: Cleveland Clinic cardiac surgeons perform a total of more than 4,500 heart surgeries annually, with each surgeon completing 300 to 400 cases. During his training, Dr. Koprivanac performed more than 1,000 cardiothoracic surgeries, including heart valve surgery, reoperations and complex aorta operations.

Success Rates: Cleveland Clinic is nationally and internationally renowned for the world’s best cardiovascular care, drawing patients from across the country and around the world. To learn about patient outcomes for specific conditions and procedures at Cleveland Clinic, go to http://my.clevelandclinic.org/heart/about-heart-vascular-institute/treatment-outcomes.aspx.

Education: Dr. Koprivanac holds a doctorate in medicine from the University of Zagreb School of Medicine, Zagreb, Croatia, and a master’s in clinical research from Case Western Reserve University. He was a research fellow in the Cleveland Clinic Department of Thoracic and Cardiovascular Surgery while earning his master’s and entered a six-year surgical residency at Cleveland Clinic on completion of his degree. Following his residency, Dr. Koprivanac completed his training with a two-year cardiothoracic surgery fellowship at the University of Pennsylvania, Philadelphia. 

He returned to Cleveland Clinic as an aortic clinical associate in the Department of Thoracic and Cardiovascular Surgery in 2021 and was named a full member of the surgical staff in 2022.

About Dr. Koprivanac: “There is no greater feeling than being able to help patients and improve their quality of life. In cardiac surgery, this requires high technical expertise and a wide skill set to be able to choose the best treatment option and achieve the best possible outcome. I am grateful to have learned these skills from one of the best heart surgeons in the world. I am privileged that my work is facilitated by an amazing team of individuals caring for our patients from diagnosis to discharge and beyond.”

Leisure Activities: In his leisure time Dr. Koprivanac enjoys nature and outdoor activities, including hiking, sailing and fishing, as well as basketball, tennis, movies and spending time with his family.

Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Fellowship - University of Pennsylvania
Cardiothoracic Surgery
Philadelphia, PA USA

Residency - Cleveland Clinic
General Surgery
Cleveland, OH USA

Graduate School - Case Western Reserve University School of Medicine
Cleveland, OH USA

Internship - University of Zagreb, School of Medicine
General Internship
Zagreb, Croatia,

Medical Education - University of Zagreb, School of Medicine
Zagreb, Croatia,

Professional Highlights

  • Dr. Koprivanac has presented at national and international medical meetings, including the Society for Thoracic Surgery, American Heart Association, American College of Cardiology and International Society for Heart and Lung Transplantation. He has coauthored scientific papers published in leading surgical journals, authored chapters in surgical textbooks and is a manuscript reviewer for The Annals of Thoracic Surgery.


  • Cardiac Surgery

Awards & Honors

  • 2021 Michael A. Acker Teaching Award, University of Pennsylvania
  • 2019    Excellence in Teaching Award, Cleveland Clinic 
  • 2018    Best Oral Presentation, Cleveland Clinic Cardiothoracic Surgery Research Day
  • 2008    Rector's Award for best student research/article, University of Zagreb 


  • American College of Surgeons 
  • Society of Thoracic Surgeons 
  • International Society for Heart and Lung Transplantation 
  • American Heart Association 
Research & Publications

Research & Publications

See publications for Marijan Koprivanac, 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 9/23/2023, Dr. Koprivanac 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.

Patient Satisfaction Reviews

117 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
4.7 out of 5
Explains 4.6
Listens 4.7
Courtesy, Respect & Concern 4.8

2 Patient Comments

Reviewed on Oct 31, 2023

Dr K Saved my life and Dr Hammer was so caring

Reviewed on Mar 22, 2023

My surgeon *Dr. Koprivanac was very good. I owe a life to him and his team.

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