As opposed to private providers, who are oh-so-safe? For breaches of private providers so far, see http://www.hhs.gov/ocr/privacy/hipaa/administrative/breachno...

A quick sum of all the incidents in there adds up to 22 million health care records lost so far. It's hard to imagine the government could do much worse.

In case you don't feel like importing the CSV file somewhere, https://docs.google.com/spreadsheet/ccc?key=0AkJeZCqH2PsHdDZ...

(Not modified except for column width and a final tally)

My understanding of the exchanges is they're just a way to buy health insurance. They're not storing your medical records in the exchanges.

Coming from a medical billing service which deals with this, yes they will keep your records as of 2014 I believe.

Exchanges may also refer to Health Information Exchanges (HIE).

http://www.healthit.gov/providers-professionals/health-infor...

And yet somehow, in general, national health services with highly integrated medical data storage systems across Europe don't seem to lose data as often as you'd think.