
DR.
MARK A. JOHNSTON
Dr.
Johnston has been in private practice and on staff at Presbyterian Hospital
in Dallas since 1987. Although born in San Antonio, he claims Dallas as his
hometown having attended Jesuit High School and W.T. White High School. He
received his Bachelor of Science Degree from Texas Tech University where he
attended on a baseball scholarship. He continues to be actively involved in
sports.
Dr. Johnston received his Medical Degree from The University of Texas Southwestern
Medical School in Dallas, and completed his residency in Internal Medicine
at Good Samaritan and Veterans Hospitals in Phoenix. He is a member of the
American College of Physicians, American Medical Association, Texas Medical
Association, International Society of Travel Medicine, and Dallas County Medical
Society. Dr. Johnston places strong emphasis on preventive medicine and wellness
with special interests in hypertension and cardiovascular disease.
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