Matthew Dalton Files, MD

Matthew Dalton Files, MD


On staff since September 2013

Academic Title: Assistant Professor

Research Center: Center for Integrative Brain Research

"I am honored to enter into families lives at crucial time points. From a newborn with complex heart disease to a teenager's heart that curiously flutters, I understand that these are frightening times in people's lives. I love being able to explain and demystify complex problems and provide a roadmap for the future. Our field has made incredible progress over the past 50 years, yet I am humbled by how far we still have to go. Caring for children with heart disease involves a multi-disciplinary approach and I'm privileged to work with such expert and energetic faculty and staff at Seattle Children's Hospital."

  • Matthew Files MD, is attending pediatric cardiologist at Seattle Children's Hospital and is assistant professor in the Department of Pediatrics at the University of Washington School of Medicine.

    He earned his MD at University of Mississippi Medical Center in Jackson and completed his pediatric residency at Oregon Health and Science University in Portland, OR. He went on to complete his pediatric cardiology fellowship at the University of Washington / Seattle Children's Hospital before joining the Seattle Children's Heart Center as faculty in 2013.

    Dr. Files enjoys caring for children of all ages with all types of congenital and acquired heart disease. His clinical and research focus includes improving outcomes for the most high risk infants and children with heart disease.

    • Ryan Port Orchard, WA 05.23.17

      Dr. Files was a part of the team that saved my newborn daughters life. We are forever grateful and appreciative to him for what he has done. Thank you Dr. Files! It is very hard being the parent of a child who is in a children's hospital. It is very stressful and frustrating. The only thing that makes it easier is having doctors like Dr. Files. He has followed my daughter and knew her case. He listens and cares. After over 2 months in the hospital, we were just exhausted and frustrated. Dr. Files took the time to let us vent. He did his best to help us understand what was going on and sympathized with how hard it is. I really feel he cares about our family and our daughter. If you have the chance to work with him, he will do a wonderful job for you. Your child is in good hands.

    • Makayla Everett, WA 11.16.15

      Dr. Files is by far the best doctor I've ever met! He's genuine, caring, and knowledgeable. He always finds answers to your questions, and listens to your concerns. I'm very thankful he was our daughter's doctor, and would've continued to be if she were still here.


Board Certification(s)

Pediatric Cardiology

Medical/Professional School

University of Mississippi School of Medicine, Jackson


Pediatrics, Oregon Health and Sciences University, Portland


Cardiology, Seattle Children's Hospital, Seattle

Clinical Interests

Single ventricle palliation, neurodevelopmental outcomes, echocardiography, and ECMO

Research Description

Neurodevelopmental outcomes for children with congenital heart disease, ECMO and the influence of thyroid hormone, quality improvement