Corporate Headquarters6555 N. State Highway 161Irving, TX 75039972-446-4800 Print directions (PDF, 453 KB)Public Transit:Dart Rail SystemTake the Orange Line to Irving Convention Center Station and bus to Parkridge/Royal Lane.Dart Bus SystemExit at Parkridge/Royal Lane.Driving Directions:From DFW Airport:Head Northwest on International Pkwy towards the North airport exitExit TX-114 E toward Irving/Downtown DallasTake exit toward President George Bush TurnpikeContinue on W John W Carpenter FwyAs you approach the 161 intersection, take the U-turn lane on the leftMcKesson headquarters will be on the rightParking recommendations:McKesson ParkingVisitor parking is located in front of building A and B.