SAN FRANCISCO--(BUSINESS WIRE)--McKesson Corporation (NYSE:MCK) will release financial results for its first fiscal quarter ended June 30, 2010 on Friday, July 30, 2010, prior to the opening of trading on the New York Stock Exchange. The company has scheduled a conference call for 8:30 AM Eastern Time (5:30 AM Pacific Time) during which John Hammergren, chairman and chief executive officer, and Jeff Campbell, executive vice president and chief financial officer, will review these results.