Epocrates pioneered the first mobile app for physicians, enabling healthcare providers to access drug prescription and other clinical information at the point of care. InterWest was a founding institutional investor at startup, with Gil Kliman backing Stanford Business School student founders Jeff Tangney and Richard Fiedotin in a Series A financing in 1999. Jeff and Richard recruited a seasoned management team and built a premier mobile-first digital health company that obsoleted legacy clinical reference sources and became a top information resource and trusted brand among healthcare providers. With the majority of US physicians using Epocrates, the company developed a strong revenue stream from big pharma built around physician messaging, growing revenues and profitability to enable a 2011 IPO and subsequent 2013 acquisition by athenahealth. Gil served on the board from 1999 until 2011 when he partnered once again with Jeff to help him start Doximity, a current InterWest portfolio company.