Your Private Medical Records May Be Publicly Available

Medical record vendors who manage electronic health records may be selling the information found in your medical records albeit in a “scrubbed” form.  The private health information, however, appears be traceable to the patient through, among other things, public voter registration information.  No doubt HIPAA concerns abound.  What about your doctor, is s/he selling your information or keeping it private?  Also, although it appears possible to trace the health information to a particular individual, what is the likelihood?  Moreover, is or should likelihood of disclosure even a part of the equation?