Founded in 1998, Epocrates is a privately owned company that develops clinical information and decision support tools for more than 600,000 health care professionals worldwide. It offers mobile- and Web-based products, as well as drug, disease and diagnostic guides. The company also provides market research, formulary and medical education services. Epocrates has a staff of over 100 employees. Its investors include Sprout Group, Interwest Partners, Three Arch Partners and Draper Fisher Jurvetson. The company has partnerships with book publishers, distributors and group purchasing organizations. Epocrates offers formulary hosting services for hospitals and the public and private sector health plans.