Your badge will be mailed to you from the USSF national office upon successful completion of your requirements and the filing of your registration form with accompanying payment. You can expect them 3-4 weeks after everything is processed.
The 16-digit ID number is a number that is automatically assigned to every referee by the U.S. Federation referee department. This number replaces the use of your social security number for identification purposes only. It may be used by assignment software application.