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Physicians

Pediatric Heart Specialists of East Texas represents a group of physicians dedicated to the treatment of heart disease in children. All our physicians are licensed in pediatric cardiology and stay up to date with the latest medical innovations and breakthroughs in the field. Our goal is to deliver the best possible care in a personal and meaningful way to each and every infant, child, and young adult that we treat. We value our relationship with you, your child, and your referring physician, and strive to communicate effectively with all involved at every step of the way.

Shannon Blalock M.D.
Shannon Blalock,
M.D. - Medical Director

Dr. Blalock grew up in Marshall, Texas. She attended the University of Notre Dame and earned a degree in Spanish and Pre-professional studies...

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Brian S. Snarr, MD, PhD
Brian S. Snarr,
M.D., Ph.D.

Brian Snarr, M.D., Ph.D., is a pediatric cardiologist at Children’s Health specializing in caring for infants, children, adolescents and young adults...

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BriAnna Souder, D.O., M.S.
BriAnna Souder,
D.O., M.S.

BriAnna Souder, D.O., M.S., is a Pediatric Cardiologist at Children’s Health. Her care focuses on fetal echocardiography, single ventricle disease...

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