Ask HN: What would you build if you had access to health data?

My company is in "health insurance" industry, and basically we have a large amount of health insurance claims data from various insurance funds.

This consists of hospitals, members, doctors, service providers and the various claims, which were made over the last couple of years.

We also have list of service providers, hospitals, doctors, members, their location, birthday etc.

If you put your developer/hacker hat on, and if this data was available to you, what kind of COOL things would you want to build? I'd love to hear some suggestions.