Viktor Hraska, MD, PhD

Professor and Chief, Congenital Heart Surgery


  • Herma Heart Center
  • 9000 West Wisconsin Avenue
  • Milwaukee, WI 53226


  • Cardiothoracic Surgery
  • Pediatric Cardiothoracic Surgery
  • General Surgery


Diseases and Conditions

  • Atrioventricular Canal Defects
  • Coarctation of the Aorta
  • Interrupted Aortic Arch
  • Norwood Procedure and Single Ventricle Palliation
  • Pulmonary Atresia
  • Tetralogy of Fallot
  • Truncus Arteriosus
  • Ventricular and Atrial Septal Defects
  • Ebstein’s Anomaly and Tricuspid Valve Disorders
  • Transposition of the Great Arteries (TGA)
  • Congenitally Corrected Transposition of the Great Arteries (CC TGA)
  • Total Anomalous Pulmonary Venous Drainage (TAPVD)
  • Left Ventricular Outflow Tract Obstruction (LVOTO)

Treatments and Services

  • Neonatal and Infant Cardiac Surgery
  • Thoracic and Cardiac Tumor Resection
  • Transposition of the Great Vessels

Patients Ages Seen

  • Infant
  • Child
  • Adolescent
  • Adult


  • English
  • German
  • Slovakian
  • Russian

Hospital Affiliations

  • Children's Wisconsin - Milwaukee – Milwaukee
  • Froedtert Hospital – Milwaukee

Clinic Locations

Herma Heart Center

map of clinics' locations


Dr. Hraska is a world-renowned pediatric cardiovascular surgeon who brings vast clinical, teaching and research expertise to his new roles with our organization. He trained in Czechoslovakia, Slovakia and Germany and at Boston Children’s Hospital – completing residencies in anesthesia, cardiology, surgery and vascular surgery, and fellowships in cardiac surgery and pediatric cardiac surgery. Dr. Hraska regularly lectures worldwide on pediatric cardiac surgery topics and has published extensively, including books, book chapters and articles. He served as surgeon-in-chief for the German Pediatric Heart Center in Sankt Augustin, Germany, and he is the Congenital Heart Disease chair of the European Association for Cardio-Thoracic Surgery, an organization dedicated to raising standards for operative outcomes through research and training in Europe.

Education and Training

Fellowship in Cardiovascular Surgery - Children's Hospital - Boston, MA (1994)
Fellowship in Cardiac Surgery - Children's Hospital - Bratislava (1992-1993)
Fellowship in Pediatric Cardiac Surgery - Institute of Cardiovascular Diseases - Bratislava (1988-1991)
Fellowship in Cardiac Surgery - Institute of Cardiovascular Diseases - Bratislava (1986-1987)
Residency in Vascular Surgery - Institute of Cardiovascular Diseases - Bratislava (1985-1986)
Residency in General Surgery - City Hospital - Bratislava (1984)
Residency in Anesthesia and Cardiology - Institute of Cardiovascular Diseases - Bratislava (1983)
Doctor of Medicine - Comenius University - Bratislava (1982)