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The physicians in our directory are members of a Children’s Health hospital medical staff or are credentialed by Children’s Health for managed care participation. Some physicians are employed by Children’s Health, some are employed elsewhere, and some maintain an independent medical practice. There is no fee for being listed in our directory. The physicians populating your search results are selected based on the criteria that you provide and are then listed alphabetically. If a physician is no longer on a Children’s Health medical staff or participating in a Children’s Health managed care agreement, he/she would not be eligible to be listed in our directory.


Shannon Blalock, M.D. completed medical school at Texas A&M College of Medicine. She completed her pediatric residency at Arkansas Children’s Hospital followed by a pediatric cardiology fellowship at University of Texas Southwestern Medical Center/Children’s Medical Center Dallas. She also acquired additional training in echocardiography and cardiac MRI at Harvard University/Boston Children’s Hospital. 

Shannon grew up in Marshall, TX. She is married and has three children.

Education and Training

Medical School
Texas A&M University College of Medicine (2002)
University of Arkansas for Medical Sciences (2005), Pediatrics
Harvard Medical School - Childrens Hospital (2009), Radiology, General
UT Southwestern - Children's Medical Center (2008), Pediatric Cardiology

Departments and Programs