From the Portland Business Journal:
These hackers aren’t into these systems to find out what kind of maladies you have in your health record. They don’t care if you have gout. They care about your medical identity. On the black market, it’s 10 to 50 times what financial identity is. Your financial identity — credit cards, Social Security number — is worth a few dollars on the Internet, at best. Solid medical identity is, literally, an unlimited credit card that can be monetized to thousands or millions of dollars.