Dr. Nicole (Nicki) Byrne, MD, serves as the Clinical Director at Optispan, where she drives a proactive and personalized approach to preventive medicine. A Princeton graduate in Molecular Biology, she completed her internal medicine residency at Mount Sinai and went on to serve as a teaching hospitalist at Northwestern and Swedish Medical Center. With over a decade of clinical experience, Dr. Byrne brings a holistic mindset—prioritizing nutrition, exercise, sleep, emotional wellness, and precise biomarker tracking. A dedicated runner and avid wholesome cook, she models and champions lifestyle-based interventions to support lifelong health and well-being.