Flash Gordon M.D. (also spelled flash gordon m.d.) is a practicing primary care physician in Greenbrae, California, who has been described as the premier physician and medical spokesperson for the motorcyclist community in the US. He has written two books on motorcycling medicine: Blood, Sweat & Gears (1995) and Blood, Sweat & 2nd Gear (2008), and was a contributing columnist for Motorcycle Consumer News magazine.