McKesson

McKesson Corporation is a large United States-based health care corporation specializing. It is the 18th largest company in the United States and the largest health care company in the world.

The company purchased HBO & Company (HBOC) in 1999; the combined firm was briefly known as McKessonHBOC. Accounting irregularities at HBOC halved the share price and resulted in the dismissal and prosecution of many former HBOC executives, and the firm reassumed its original name in 2001. In addition to its offices throughout North America, McKesson also has international offices in Australia and Europe (Ireland, France, Netherlands and the United Kingdom).