Epocrates, Inc. (Epocrates) is a provider of mobile drug reference tools and electronic health records to healthcare professionals and interactive services to the healthcare industry. As of December 31, 2011, its user network consists of well over one million healthcare professionals, including approximately 340,000, or more than 50% of United States physicians. The Company offers its products on major United States mobile platforms, including Apple iOS, Android and BlackBerry. Epocrates operates in two segments: Subscriptions and Interactive Services, and Electronic Health Records. It uses brand names include DocAlert, Epocrates, Epocrates Honors, Epocrates ID, Epocrates Lab, Epocrates MedTools, Epocrates Rx, Epocrates Rx Pro, Epocrates Dx, Epocrates QuickSurvey, Epocrates QuickRecruit, Epocrates MedInsight, EssentialPoints and MedCafe. In October 2011, it launched a redesign of the drug reference tool to create a new platform that provides healthcare professionals.