Welcome to Vibrance HealthDarren FX Clair, MD, has been practicing medicine in the Los Angeles area for over 30 years and has helped thousands of patients improve and maintain their overall health and vitality. Dr. Clair is a functional medicine physician treating patients at Vibrance Health, which is located in Westlake Village, California. He believes that the first step to assisting his patients in attaining optimal health is to spend an adequate amount of time with each patient and obtain a comprehensive review of their medical history in order to assess their current level of health, lifestyle, and to learn of any symptoms they may be experiencing.