[blueash]

Lots of errant information on this thread. There is No law that you must give your SSN to a doctor or hospital. And contrary to a post, there also is no law that says they cannot ask you for it. You cannot sue because they asked you for your SSN [ok you can sue but you have no case] I have refused to give mine out for well over two decades. Yes the doctor could refuse to accept you as a patient. A doctor can refuse a patient for any reason. A hospital cannot.

If you try to "turn them in for trying to steal your identity" you will be laughed at, deservedly.

Someone posted that the doctor gets your SSN from your insurance company anyhow. That is wrong. The insurance company does not share that information, and if you are smart, you never gave it to the insurance company when you got the coverage.

There is no reason to give them the last four numbers, or any numbers.