Keith Stephenson, CEO and founder of Purple Heart Patient Center in Oakland, is this week’s guest on The Green Rush. Keith was the first African American in the United States to run a medical cannabis dispensary. He’s the founder and CEO of Purple Heart Patient Center in Oakland, California. He started the dispensary 11 years ago and now he’s serving 10,000 patients a month. He implemented lab testing so rigorous that it exceeds the standards of Oregon and Washington. He was appointed to the California Cannabis Commission Advisory Panel, where he advises the state on regulations protecting consumer health and safety.