CVS has replaced CEO Karen Lynch as it struggles to repair its healthcare business.David Joyner, president of the company’s pharmacy benefit management unit Caremark, has been appointed as the new chief executive, CVS announced Friday (Oct. 18).“The board believes this is the right time to make a change, and we are confident that David is the right person to lead our company for the benefit of all stakeholders, including customers, employees, patients, and shareholders,” Roger Farah, executive chairman of t ...