Investors have put $100m into Castlight Health, a five-year old start-up that produces price comparisons for medical procedures, marking the latest of a series of investments in the health field by venture capitalists who believe Silicon Valley technologists are uniquely equipped to tackle the growing health care crisis in the US.

As health care costs have soared, employers and insurers have pushed more and more of those costs onto patients, increasing their out of pocket expenses many times over. Castlight, which allows patients to compare prices for common procedures among local doctors’ offices, is one of several technology companies that believes it can ease the financial burden on patients, and be profitable. Read more