NASA is committed to expedient and accurate payment of invoices. Any questions or inquiries should be addressed to the Contracting Officer designated on your award or to the NSSC Customer Contact Center. NSSC Customer Contact Center telephone: 1-877-677-2123 (1-877-NSSC123)Fax: 1-866-779-6772 (1-866-779-NSSC) Vouchers and invoices are to be submitted in...
