Epocrates has been around for a long time in healthcare and is most noted for their mobile formulary applications which is what launched their business years ago.  The company was one of the first with this type of application and also provided a look up web service for finding information on almost any drug which is free for doctors and consumers.  Continue reading: AthenaHealth Buys Epocrates for $293 Million; Reference Tools To Be Incorporated With Athena Cloud EHR