NUCC taxonomy code
133V00000X - Registered Dietitian
133V00000X is the NUCC provider taxonomy code for Registered Dietitian (individual providers). 73,784 providers in our latest NPPES snapshot list it as their primary taxonomy.
Code breakdown
Definition
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.
Definition from the NUCC Health Care Provider Taxonomy code set.
Related taxonomy codes
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-13.