DAVID HOFFMAN, JD: It's amazing what you're doing when you sign that form. Now, the notion of privacy and confidentiality of medical information is so basic to our society, I think everyone takes it for granted, that of course your medical information is private, what you discuss with your doctor goes no further, and that's true up until the moment that you ask an insurance company to pay out the cost of that treatment to the doctor. When you do that, you're giving the insurance company permission to invade all of that privacy that we all take so seriously.
DAVID MARKS, MD: Is that bad? What are the consequences of that?
AYTAN BELLIN, JD: There are a number of consequences. First of all, the insurance companies say, and there's some truth to it, that they need the information in order to be able to determine how much to pay for the treatment. But the question is, sort of, what restraints are there on the insurance company once they get that information? Most people know that it is a canon of medical physicians won't disclose your information, but what do the insurance companies do with that? In fact, some insurance companies will submit information to an organization called the Medical Information Bureau, which collects all sorts of medical information about individuals who have made insurance claims, and then when other insurance companies want to find out whether you've had certain types of illnesses or treatments when you apply for other types of insurance, they'll go into the Medical Information Bureau and find out about it. So, really, when you're giving that information to them, it may not just be to them.
DAVID MARKS, MD: How far can this information travel, theoretically?