Dr Jeffrey Ruterbusch – Chief Medical Advisor / Founder

Dr Jeffrey Ruterbusch is a preventive medicine physician board certified in Anti-aging Medicine, Functional Medicine, Nutritional Sports Medicine, and Integrative Medicine.

He is a retired United States Naval Physician and Flight Surgeon. Dr. Ruterbusch attended medical school on the United States Health Professions Scholarship Program and did his Internal Medicine internship at the National Naval Medical Center in Bethesda Maryland. He served several operational medicine tours with the United States Marine Corps in Okinawa, Japan and in the United States Navy as a Naval Flight Surgeon in Pensacola and Jacksonville Florida. Dr Ruterbusch attended the University of California, San Diego and San Diego State University where he was the Chief Resident in the SEPM program.


Dr Thomas Kiska – Clinical Director / Founder

Dr. Thomas Kiska is a natural healthcare physician with over 35 years of experience in clinical nutrition. He is board certified in Chiropractic Medicine and maintains multiple national and international clinical nutrition certifications. Dr Kiska’s primary education was completed at Rutgers University, Rutgers College of Pharmacy, and Los Angeles College of Chiropractic.

Dr. Kiska is the founder of Advanced Nutritional Systems, a nutrition software program for physician offices specific for Thorne nutritional products. He has been published multiple times in professional journals for such articles as, “Refined Sugar Products Effect on America’s Serum Cholesterol Levels.”

After several developmental positions in the nutrition industry designing natural primary care models, Dr Kiska founded Regenumed LLC in 2020. He soon began finalizing the development of the Precision Health product into a functional primary care model. Dr Kiska is now proud to introduce Precision Health to the Jacksonville community with Dr Jeffrey Ruterbusch as our Chief Medical Advisor and partner.