If you have previously been in Germany and were working, you were probably given a Social Security number ‘Sozialversicherungsnummer’
This is mandatory and is provided by the German Pension Office. It is necessary to be registered in Germany to apply for a German social security number, because the social security number can only be sent to a German address.
If you have received this number before, you can add it into our health insurance questionnaire. If not you do not have to put in the information.