(6) Person who is subject to loss of consciousness due to disease of the central nervous system, unless such person furnishes the Department with a certificate of the person's treating physician, duly licensed to practice medicine and surgery, which certificate states:
"I ____ (name of treating physician) hereby certify that I am the treating physician for ____ (name of person), that I have been the treating physician for him/her for a period of at least 3 months, that I am aware of his/her medical history, including his/her history with respect to diseases of the central nervous system, and that such person's physical or mental disability under sufficient control to permit him/her to operate a motor vehicle with safety to person and property."
Each person licensed to operate a motor vehicle on the basis of such certificate shall furnish the Department with a new certificate each year not later than the last day of the holder's birth month and not earlier than 45 days before said date. The certificate shall show that on the basis of an examination within said period a physician duly licensed to practice medicine and surgery has determined that the physical or mental disability remains under sufficient control to permit the person to operate a motor vehicle with safety to person and property. Except as provided below, if such certificate is not received by the Department, the Department shall suspend said license and shall notify its holder.