Claudius Mahr D.O., F.A.C.C., F.E.S.C. Accepting new patients

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Cardiology (cardiovascular disease), Cardiovascular disease


English, German, Spanish


Claudius Mahr, D.O., F.A.C.C., F.E.S.C., is a board certified cardiologist, director of Clinical Integration and medical director of Mechanical Circulatory Support at UW Medical Center and a UW associate professor of Cardiology.

Dr. Mahr specializes in providing care to patients with heart failure, using the latest in medical, surgical and device therapies. He strives to create active partnerships with his patients to achieve the best possible outcomes.

 Dr. Mahr earned his D.O. at Midwestern University, Downers Grove, Illinois. He is triple board certified in Advanced Heart Failure and Transplant Cardiology, Cardiology and Internal Medicine .He is a member of the American College of Cardiology, the European Society of Cardiology, the Heart Failure Society of America, and the International Society for Heart and Lung Transplantation. 

Personal Interests

In his spare time, Dr. Mahr enjoys exercising, traveling, music and art.
Regional Heart Center at UWMC

Heart Institute at UW Medical Center

1959 NE Pacific St., 3rd Floor Seattle, WA 98195


Adult congenital heart disease, Advanced heart failure and transplant cardiology, Behavioral healthcare, Cancer care and your heart

Northwestern University

Fellowship, 2011, Cardiology

University of Illinois - Advocate Healthcare

Fellowship, 2010, Cardiovascular Medicine

Northwestern University

Residency, 2007, Internal Medicine

McGaw Medical Center of Northwestern University

Internship, 2005, Internal Medicine

Midwestern University

Medical education, 2004


Board Certifications
  • Advanced Heart Failure and Transplant Cardiology, 2012, American Board of Internal Medicine
  • Cardiovascular Disease, 2010, American Board of Internal Medicine
  • Internal Medicine, 2007, American Board of Internal Medicine