[tyre]

There is a field in a claims form that indicates what type of insurance it is.

One of these is CHAMPUS, which indicates that it is for a service member or their family. You can tell which.

As a basic case, accumulate these (as in the CHC breach of ~30% of Americans) and you have a nice map of where US military are. Since bases house particular units and types of forces, a nation state can estimate strength and investment in the US military.

In a specific case, the response to claims includes patient responsibility (deductible, co-insurance, co-pay.) Add that up for a financial picture, then you’ve got a nice lead list for service members who have money problems.