Is Comparison Shopping the Future of Health Care? Silicon Valley Says Yes.

Whether it’s looking up restaurants on Yelp! or scanning Craigslist for apartment listings, Americans comparison shop for nearly everything online — everything except for health care. A recent survey found that we spend more time comparing value of dishwashers than doctors.

Castlight Health wants to change that. The nascent health care start-up launched last year with the goal of giving insurance subscribers meaningful information on health care costs. Castlight, in the simplest terms, wants to bring comparison shopping to health care...