The Division of Cardiology is part of Seattle Children’s Heart Center, a specialized team of pediatric cardiologists, cardiac surgeons, pediatric cardiac intensive care specialists, cardiac anesthesiologists, nurses, echocardiography technicians and caring staff.

We are a comprehensive cardiac care provider for the fetus to the adult, and our commitment to the best possible outcome for each patient includes ongoing research into new treatments and technologies. We have a reputation for excellence in services ranging from advanced therapeutic catheterization procedures for common cardiac defects and heart rhythm disorders to heart transplantation for infants with more complex cardiac problems. The Division of Cardiology is committed to achieving greater national recognition for leadership in innovation, collaboration and excellence. Our faculty’s intellectual curiosity and spirit of inquiry define our culture, and our research and clinical care partnerships provide models for our peers.

Leadership and Faculty

Mark B. Lewin, MD, Division Chief

Cardiology, Prenatal Diagnosis and Treatment

Academic Title: Professor

Mark B. Lewin, MD, is chief in the Division of Cardiology, director of the Prenatal Center and co-director of the Cardiac Ultrasound Program at Seattle Children’s Hospital. He is professor in the Department of Pediatrics and adjunct associate... cont.


  • Jennie Allen, MD
  • Jason Deen, MD
  • Matthew Files, MD
  • Zebulon Spector, MD
  • Patrick Sullivan, MD
  • Josh Weldin, MD
  • Bethany Wisotzkey
  • Kamill Del Toro