Catherine Johnson

Catherine Johnson, MD


I use body composition testing with personalized laboratory data to create custom biomarker panels for each client of Precision Medical Care. Fasting insulin levels, cortisol, glucose, kidney and liver function tests are measured and tracked with your lipid and hormone levels to optimize health, reverse pre-diabetes/diabetes and prevent heart attack, stroke and dementia. I create custom fasting protocols for each client and recommend targeted supplements to support magnesium, vitamin D, omega3 and zinc levels while supporting your hydration, electrolytes, energy and sleep, too.


  • Doctor of Medicine


  • Preventive
  • Age Management
  • Optimal Health Medicine

Contact information

Precision Medical Care
365 5th Ave S, Naples, FL 34102, USA

Precision Medical Care
23-SEP Walker Ave, Clarendon Hills, IL 60514, USA

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