If you believe that your medical and personal information should be kept in strict privacy, you may be in for an unpleasant surprise. Your medical information is not actually private -- you sell it without realizing it.
If you look at your office bill or EOB (explanation of benefits), you'll see coded numbers (CPT and ICD9). Those numbers tell your insurance company or Medicare all of the information about your visit and treatment. They not only get the bill with all of its coding, they have the right to look through your chart and any other charts in any other doctor's office, any time.
According to the website Kevin MD:
"Can your loss of privacy hurt you? ... I think privacy is one of the most valuable assets you can have. I believe in the sanctity of the doctor-patient relationship and that what you tell me should be held in the strictest confidence ... Now that you know the medical world's dirty secret, the secret that has been right in front of your face all these years, it's time to answer the question, 'What's your privacy worth to you?'"