All students at William Paterson University have an ID number which is a unique identifier which cannot be changed. If for some reason you Social Security Number needs to be changed, a copy of your social security card should be brought or sent to the Office of the Registrar, Morrison Hall, RM G 03. The change process usually takes one week. If you have any further questions regarding a Change of Student Identification Number, you can e-mail: registrar@wpunj.edu.