Sukanya Reddy, M.D

I am receiving a bill from the above doctor for a service that was supposedly provided YEARS ago. I don't remember the doctor or why I was attended by her. This happens when you send a bill YEARS after the fact. Is this even allowed to do? You can send bills 3-4 years after the service? Why I didnt receive this bill before?This is unacceptable. I don't have recollection of the service received, it was YEARS ago.