SAN DIEGO--(BUSINESS WIRE)--DexCom, Inc. (NASDAQ:DXCM) today announced that Steven R. Pacelli has been appointed to the newly created position of Chief Operating Officer (COO). In this role, Mr. Pacelli will be responsible for the strategic and operational leadership of DexCom’s sales, marketing and other core commercial functions, including finance, customer support, quality, corporate development, managed care, human resources, legal and intellectual property and investor relations. Mr. Pacelli will continue to report to Terry Gregg, DexCom’s President and Chief Executive Officer.