The National Board of Nutrition Support Certification (NBNSC) is an independent credentialing board established in 1984 by the American Society for Parenteral and Enteral Nutrition (ASPEN).

Contact NBNSC

NBNSC wants to hear from you.  Call us at 301-587-6315 or email us at [email protected]. We look forward to hearing your comments and questions.  


Questions about the status of your application, test center issues, and exam results?

Contact Professional Testing Corporation at (212)356-0660 or email [email protected] 


Questions about testing sites and appointments?

Contact Prometric at (800)741-0934 or visit