Health Mart is a network of more than 2,500http://www.chaindrugreview.com/inside-this-issue/news/02-15-2010/health-mart-reaches-a-milestone independently owned and operated pharmacies. It is a wholly owned subsidiary

Subsidiary

A subsidiary company, subsidiary, or daughter company is a company that is completely or partly owned and wholly controlled by another company that owns more than half of the subsidiary's stock. The subsidiary can be a company, corporation, or limited liability company. In some cases it is a...

 of McKesson Pharmaceuticals, which owns the name "Health Mart."

Health Mart was awarded first place for customer satisfaction in the 2009 J.D. Power and Associates pharmacy study, among chain drug retailers.http://www.jdpower.com/healthcare/ratings/pharmacy-ratings-(brick-and-mortar)/chain