See, I had no idea such a thing existed, and you can bet my parents would not have told me. I always thought that as long as I had the office bill my address, that was the end of it.

I was actually... er, let's say "discussing" the issue with my bf last night, because I really don't know how much to tell them. I'd rather be independent-ish and take care of things on my own; if nothing else, their reactions tend to be stressful. (If my mom thinks it's actually worrisome, she will make herself sick with worry; if she doesn't, she will go on and on and on about how I'm wasting money. There may also be some blurring of these lines. ) That said, many of our troubles in the past have been because they don't think I'm open enough with them.
And if something does turn out to be wrong, I guess it wouldn't be very nice to just call them up one day and say, "By the way, I have this disease!"

Anyway, with the additional factor of EOBs, it seems really silly to try to obfuscate. I guess I'll just have to deal with it.