SAN DIEGO--(BUSINESS WIRE)--DexCom, Inc. (NASDAQ:DXCM) today announced that Richard B. Doubleday has been appointed to the position of Vice President of Sales where he will oversee DexCom’s sales and sales administration functions. Mr. Doubleday joins DexCom from Johnson & Johnson, where he spent over 21 years at several operating companies, including the past 13 years working in the diabetes space for both LifeScan, Inc. and Animas Corporation. Mr. Doubleday will report to Terry Gregg, DexCom’s President and Chief Executive Officer.