Mark Key, MD

About Dr. Key

Dr. Mark Key, MD, is a board-certified family medicine physician with a comprehensive approach to health that spans full-scope primary care, longevity medicine, and the specialized needs of high-performance athletes. He earned his undergraduate degree from Lubbock Christian University in 2003, followed by his medical degree from Texas Tech University Health Sciences Center (TTUHSC) in 2007. Dr. Key completed his family medicine residency at TTUHSC in 2010, laying a strong foundation for a career dedicated to preventive care, chronic disease management, and performance optimization across all life stages.

With a practice rooted in evidence-based longevity strategies, Dr. Key integrates advanced diagnostics, hormone optimization, and lifestyle interventions to help patients extend both lifespan and healthspan. His expertise in caring for elite athletes stems from years of hands-on experience, guiding competitors through injury recovery, peak conditioning, and sustained performance. Whether managing complex family health needs or fine-tuning the physiology of a professional fighter, Dr. Key delivers personalized, proactive care that empowers patients to thrive.

Outside the clinic, Dr. Key is a devoted husband to Kimberly and proud father of eight, with five grandchildren bringing new energy to family life. An avid hunter, he also draws on a storied athletic background as a former professional boxer and black belt in Brazilian jiu-jitsu, Dr. Key continues to mentor the next generation—instilling discipline, resilience, and the pursuit of excellence both in the ring and in life.