Castlight Health Strengthens Health Navigation Platform with Washington Health Alliance Partnership

Improves care guidance for Castlight’s Washington state customers including Boeing, Esterline Technologies, Microsoft and Providence St. Joseph Health

San Francisco and Seattle – November 8, 2017 – Today, Castlight Health, Inc, Inc. (NYSE: CSLT) announced its partnership with the Washington Health Alliance, the state’s leader in healthcare cost and quality transparency. The partnership integrates Castlight’s comprehensive health navigation platform with Washington state’s largest healthcare cost and quality database to help the state’s Castlight customers, including Boeing, Esterline Technologies, Microsoft and Providence St. Joseph Health and their employees make smarter health benefits and healthcare decisions.

“We are proud to partner with the Washington Health Alliance, an innovative local leader committed to improving healthcare for the people of Washington state,” said John Doyle, CEO of Castlight Health. “Castlight’s platform, integrated with the best-available cost and quality data, will help Washington employees make better healthcare choices by guiding them to high-quality, high-value providers and care.”