133VN1301X — Oncology Nutrition Registered Dietitian

133VN1301X is the NUCC provider taxonomy code for Oncology Nutrition Registered Dietitian, a specialization within Dietitian, Registered (individual providers). 127 providers in our latest NPPES snapshot list it as their primary taxonomy.

Taxonomy code	133VN1301X
Display name	Oncology Nutrition Registered Dietitian
Grouping	Dietary & Nutritional Service Providers
Classification	Dietitian, Registered
Specialization	Nutrition, Oncology
Section	Individual
Directory	Dietitian, Registered provider directory

Definition

An individual who is a Board Certified Specialist in Oncology Nutrition and provides direct nutrition care for individuals at risk for or diagnosed with cancer. RDNs working directly with individuals at risk for, or diagnosed with, any type of malignancy or pre-malignant condition, in a variety of settings (e.g. hospitals, clinics, cancer centers, hospices, public health), OR indirectly through roles in management, education, industry, and research practice linked specifically to oncology nutrition. RDN who works indirectly with oncology nutrition through roles in management, education, industry, and research.

Definition from the NUCC Health Care Provider Taxonomy code set.

Related taxonomy codes

133V00000X — Registered Dietitian
133VN1101X — Gerontological Nutrition Registered Dietitian (Dietitian, Registered)
133VN1006X — Metabolic Nutrition Registered Dietitian (Dietitian, Registered)
133VN1201X — Obesity and Weight Management Nutrition Registered Dietitian (Dietitian, Registered)
133VN1004X — Pediatric Nutrition Registered Dietitian (Dietitian, Registered)
133VN1401X — Pediatric Critical Care Nutrition Registered Dietitian (Dietitian, Registered)
133VN1005X — Renal Nutrition Registered Dietitian (Dietitian, Registered)
133VN1501X — Sports Dietetics Nutrition Registered Dietitian (Dietitian, Registered)

Frequently asked questions

What does taxonomy code 133VN1301X mean?

133VN1301X is the NUCC Health Care Provider Taxonomy code for Oncology Nutrition Registered Dietitian, a specialization of Dietitian, Registered in the "Dietary & Nutritional Service Providers" grouping. It classifies individual providers.

Where is the taxonomy code used?

Providers select a taxonomy code when applying for an NPI, and it appears on insurance claims (CMS-1500 box 33b / 837 electronic claims) to identify the provider's classification. Payers may require the taxonomy that matches your credential and license.

How do I find providers with taxonomy 133VN1301X?

Browse the Dietitian, Registered directory, or use the NPI search and filter by state.

Source: CMS NPPES (public data). Snapshot 2026-07-09.