CVS Health tapped industry executive David Joyner to replace CEO Karen Lynch and turn around the struggling business.  Joyner – who has 37 years of health care and pharmacy benefit management experience – took over on Thursday as Lynch stepped down from her position in agreement with the company’s board of directors, CVS said.Joyner previously served as executive vice president of CVS Health, and president of CVS Caremark, where he led the pharmacy services business. THE HISTORY OF CVS: FROM SMALL MASSACHUS ...