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Dr. Chris Renna

Dr. Renna graduated cum laude from the University of Texas, earned his medical degree in Osteopathic medicine cum laude from the University of North Texas Health Science Center and completed a residency in family medicine. In his initial years of practice, he learned that medical school backgrounds prepared doctors to diagnose disease but did not prepare them to focus on health.

Dr. Renna decided to really help his patients improve their overall health, he needed to create a new system entirely focusing on a preventive and wellness program with support thru a personal service model and using the top diagnostic testing, technologies and medical knowledge in the world. 

Since founding LifeSpan medicine in 1992, Dr. Renna has maintained a small practice focused on optimal health with two rules. 

Everything is about the patient.

Everything is about health.

Dr. Renna’s practice gives an in-depth evaluation and creates a customized plan for each patient. Over the years his passion and dedication to his clients as well as his unique approach has earned him an exceptional reputation as the nation’s premiere preventive medicine provider. He is a popular speaker, a published author and lecturer to audiences across the United States and abroad.


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Dr. Jeffrey Egler

Jeffrey M Egler, MD is a board certified Family Practice physician with specialty training in preventive, functional medicine.  He began his accomplished career with 7 years in private practice in Colorado and Lake Tahoe.  In 2010, he joined the USC Keck School of Medicine as a practicing physician, faculty member and mentor to resident physicians.

Dr Egler wanted to make a bigger difference in his work and is passionate about working with clients to get to the root of issues, eliminate symptoms, prevent disease and maximize health. He strongly believes he can be a better doctor if he takes the time, and can identify the underlying issues in a person’s health and not just treat the symptoms. His current practice is focused on comprehensive medical evaluations and individualized recommendations and treatments. 

Dr. Egler maintains his role in academic medicine through his faculty role at USC as well as his continued pursuit of leading edge treatments and research. He is a frequent speaker on the subjects of executive health, disease prevention and optimal performance. Dr Egler is a member of the American Academy of Family Physicians, American Institute for Functional Medicine (IFM), American Board of Family Medicine, Society of Teachers of Family Medicine (STFM).  Dr Egler was also recognized as a Top Doctor in 2014.