SAN FRANCISCO--(BUSINESS WIRE)--McKesson Corporation (NYSE:MCK) will release financial results for its first fiscal quarter ended June 30, 2011 on Thursday, July 28, 2011, following the market close at approximately 4:00 PM Eastern Time (1:00 PM Pacific Time). The company has scheduled a conference call for 5:00 PM Eastern Time (2:00 PM 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.