Medical Sciences

Medical Sciences Experts

John H. Hammergren

Chairman, President and Chief Executive Officer
United States of America


John H. Hammergren is chairman, president and chief executive officer of McKesson Corporation. He was elected president and CEO in 2001 and chairman in 2002. Under Mr. Hammergren’s leadership, McKesson has become the leading provider of healthcare services and information technology solutions that help organizations across the healthcare industry improve their business performance and deliver better care to patients. 

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