If there is your photo on the social security card, it should have two passwords. You should change the password of the financial account. You need to use a medical insurance account to register in the hospital. You can try the original password at the drugstore near your home. I suggest you try it twice. If you are wrong the second time, don't try. The card will be locked.

If not, go to the bank where the social security card is issued to modify it.