Mr. Campbell has served as Chief Financial Officer of the American Express Company since August 2013. From January 2004 to June 2013, he served as Executive Vice President and CFO of McKesson Corporation, the largest healthcare services company in the United States. Prior to his time at McKesson, Mr. Campbell spent 13 years at AMR Corp and its principal subsidiary American Airlines, ultimately becoming the company's CFO in 2002. He held a variety of financial and operations positions at American, including leading the company’s Europe, Middle East, and Africa operations while based in London. He began his professional career as a certified public accountant and management consultant with Deloitte, Haskins & Sells.