Below is an actual letter received – and almost thrown away – by an employee of a medical practice. They almost threw it away because it looked like junk mail.
It turned out to be a letter from a RAC (Recovery Audit Contractor) who was auditing their practice. They figured that the letter was purposefully designed in such a way as to encourage disposal and thus possibly trigger additional charges and penalties. That practice now carefully combs through every piece of seemingly innocuous mail and they recommended for other practices to do the same.