I signed mine yesterday. It’s part of the medical power of attorney designation in your last will and testament. It’s basically stating your wishes legally in the event you cannot speak for yourself. It allows you to designate someone to speak with the physician on your behalf and follow your instructions regarding situations where you’re terminal, incapacitated, etc. Its a way to retain your rights, you sign over HIPAA so someone can act on your behalf to hold a facility accountable.