133V00000X
Dietitian, Registered Nutrition, Oncology Taxonomy Code 133VN1301X
133VN1301X
Level III - Area of Specialization
280Registered providers
71Medicare specialty
26.0NUCC version
47States & territories
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.
Code Details for 133VN1301X
About Taxonomy Code 133VN1301X
The taxonomy code 133VN1301X identifies Dietitian, Registered Nutrition, Oncology within the Dietary & Nutritional Service Providers provider grouping. It is a Level III — Area of Specialization code, the most specific tier: it narrows the parent classification to a defined subspecialty.
NPI records show 280 registered providers whose primary or secondary taxonomy is this code. Of these, 36 (13%) are registered as organizations and 244 (87%) as individual providers. The states with the most dietitian, registered nutrition, oncology providers are California (32), Florida (23), New York (23). For Medicare enrollment, it crosswalks to specialty code 71 (Registered Dietitian or Nutrition Professional).
Taxonomy codes are self-selected by the provider based on their education and training; they describe the provider's type and specialty, not the specific services rendered.
Provider Composition & Statistics
280Total providers
36Organizations 13%
244Individuals 87%
230Female
14Male
Gender is recorded for individual providers only; organizations are not gendered. Source: NPPES, last updated 2026-07-12T00:00:00.
View all 280 providersDietitian, Registered Nutrition, Oncology Providers by State
Provider counts by U.S. state and territory. Select a state to open its provider directory.
All states (nationwide)
280
Alabama2Alaska1Arizona8Arkansas1California32Colorado5Connecticut2District Of Columbia5Florida23Georgia14Idaho4Illinois8Indiana3Iowa3Kansas1Kentucky6Louisiana10Maine2Maryland3Massachusetts5Michigan5Minnesota2Mississippi1Missouri6Nebraska2Nevada3New Hampshire2New Jersey4New Mexico4New York23North Carolina9North Dakota1Ohio6Oklahoma6Oregon3Pennsylvania5Puerto Rico1Rhode Island2South Carolina1Tennessee4Texas15Utah3Vermont2Virginia10Washington5Wisconsin2Wyoming1
Frequently Asked Questions
133VN1301X questionsNPPES lists 280 registered providers with this taxonomy code (Dietitian, Registered Nutrition, Oncology).
Both. About 13% of these providers are registered as organizations and 87% as individuals.
It crosswalks to Medicare specialty code 71 (Registered Dietitian or Nutrition Professional).
It is a Level III - Area of Specialization code in the NUCC Health Care Provider Taxonomy set. As an area of specialization, it falls under the Dietitian, Registered classification (parent code 133V00000X).
Use the "Providers by state" directory on this page to open the list of dietitian, registered nutrition, oncology providers registered in any U.S. state.
Source: National Uniform Claim Committee (NUCC) Health Care Provider Taxonomy code set, Version 26.0. Provider counts from NPPES. See nucc.org.
