Marc Demyun,

MD, FACP, FHM, CPHQ

His passion is unparalleled.  

Dr. Demyun is a board-certified Internal Medicine physician with over 20 years of experience, specializing in internal medicine. He serves as the Chairman of Graduate Medical Education at Texoma Medical Center and Core Faculty at Hunt Regional Medical Center, helping train future physicians.

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Dr. Demyun completed his Internal Medicine training at NYU Mount Sinai, holds a CPHQ certification, and is a Fellow of the American College of Physicians with 10+ peer-reviewed publications. He also has a background in finance from the London School of Economics.

He began his professional journey in 2002 as the Medical Director of Hospital Medicine at Wesley Medical Center in Hattiesburg, Mississippi, before transitioning to Envision in 2014. He had a decade-long tenure as Regional Medical Director with Envision Physician Services. Dr. Demyun is the Chairman of the Graduate Medical Education Committee at Texoma Regional Medical Center and holds a faculty position at the University of North Texas.