Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Lawyer Gregg Nathaniel Johnston, Practice Areas No known practice areas. is located in the city of Mckeesport, the state of Pennsylvania. Attorney legal address 1051 Center StMckeesport, PA, 15132-7442. For more information, please call (724) 816-1441 Your comments* (not for publishing) * — Required information Gregg Nathaniel Johnston ← View details 1051 Center StMckeesport, PA, 15132-7442, Mckeesport, Pennsylvania (724) 816-1441