Seattle health care data startup Opala names Premera Blue Cross exec as CEO

Seattle-based health care data company Opala is hiring Ken Chandler as its new CEO. Chandler spent more than 20 years with the Mountlake Terrace-based health insurance company Premera Blue Cross, and he's worked in health care for more than 30 years, according to Opala. He begins with the company at the start of July and will replace interim CEO John Wray, who is taking a position on the company's board. "I'm joining the team because of the potential Opala has to make fundamental changes in health…