Dr. Joon Yun is President and Managing Partner of Palo Alto Investors LP, a healthcare hedge fund founded in 1989. Board certified in radiology, Joon served on the clinical faculty at Stanford from 2000-2006. Joon has served on numerous boards, and he is currently a trustee of the Salk Institute. Joon has published dozens of patents and scientific articles. Joon and his wife Kimberly launched the $1 million Palo Alto Longevity Prize in 2013 to reverse the aging process and recently donated $2 million to launch the National Academy of Medicine Aging and Longevity Grand Challenge.