who we are


The National Board of Nutrition Support Certification, Inc. (NBNSC) is an independent credentialing board managed by its own Board of Directors. Through its credentialing program, NBNSC determines the body of knowledge needed for an understanding of nutrition support, develops a fair and valid means to test applicants, and promotes the credential to other healthcare professions and organizations. The CNSC® certification enables all health-care practitioners involved in nutrition support to identify themselves as qualified caregivers. 

NBNSC's credentialing program provides a valuable addition to your professional experience and contributes to excellent care. The Certified Nutrition Support Clinician®(CNSC®) credential identifies you as a qualified nutrition support provider. It is the most widely accepted, visible nutrition support certification with recognition both nationally and internationally.

The NBNSC was established in 1984 by the American Society for Parenteral and Enteral Nutrition (ASPEN) to administer certification programs in specialized nutrition support: the Certified Nutrition Support Clinician® (CNSC®) certification program. Nutrition support is a sophisticated and specialized practice that requires the expertise and knowledge of multiple health-care professionals including physicians, dietitians, pharmacists, advanced practice providers (physician assistants, advanced practice nurses, nurse practitioners), dentists, and nurses.

NBNSC Mission

NBNSC's mission is to promote the enhanced delivery of safe and effective nutritional care through the certification of qualified clinicians practicing nutrition support.

About ASPEN 

Founded in 1976, ASPEN is a medical professional organization whose members are involved in the provision of clinical nutrition therapies. With nearly 6,000 members from around the world, ASPEN is a community of dietitians, nurses, nurse practitioners, pharmacists, physicians, physician assistants, scientists, students, and other health professionals from every facet of nutrition support clinical practice, research, and education.