About Dr. Sogol Ash Dr. Sogol Ash is a functional longevity doctor and one of the most sought-after root cause physicians in the country, based in Los Angeles. Originally trained as a naturopathic doctor, her background combines Eastern and Western medicine with a focus on treating the whole person, not just symptoms. Master’s in Global Medicine, USC Keck School of Medicine Doctorate from Bastyr University Advanced training through the Institute for Functional Medicine Featur