 SPRINGFIELD, Va.--BUSINESS WIRE--Spok, Inc., a wholly owned subsidiary of Spok Holdings, Inc. NASDAQ: SPOK and a global leader in healthcare communications, announced that Dominion Radiology Associates, PLLC DRA has selected the Spok Go cloud-native communication platform to activate care team collaboration between radiologists and referring physicians. DRA is a professional physician owned practice that provides subspeciality diagnostic imaging, interventional radiology and other radiol 