Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Lawyer John William Powell, Practice Areas No known practice areas. is located in the city of Diamond Bar, the state of California. Attorney legal address 20955 Pathfinder Rd #100Diamond Bar, CA, 91765. For more information, please call (909) 843-6406 Your comments* (not for publishing) * — Required information John William Powell ← View details 20955 Pathfinder Rd #100Diamond Bar, CA, 91765, Diamond Bar, California (909) 843-6406