Nutritionist Taxonomy Code 133N00000X
133N00000X
Level II - Classification
6,421Registered providers
25.1NUCC version
55States & territories
Definition
A specialist in adapting and applying food and nutrient knowledge to the solution of food and nutritional problems, the control of disease, and the promotion of health. Nutritionists perform research, instruct groups and individuals about nutritional requirements, and assist people in developing meal patterns that meet their nutritional needs; (2) A nutritionist is someone who has completed undergraduate and/or graduate training in the discipline of nutrition without necessarily meeting the academic and experience requirements to qualify for the Registered Dietitian designation.
Code Details for 133N00000X
About Taxonomy Code 133N00000X
The taxonomy code 133N00000X identifies Nutritionist within the Dietary & Nutritional Service Providers provider grouping. It is a Level II — Classification code, which names a provider's occupation or service within the broader provider grouping.
NPI records show 6,421 registered providers whose primary or secondary taxonomy is this code. Of these, 1,183 (18%) are registered as organizations and 5,238 (82%) as individual providers. The states with the most nutritionist providers are New York (673), California (663), Florida (397).
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
6,421Total providers
1,183Organizations 18%
5,238Individuals 82%
4,710Female
526Male
2Undisclosed
Gender is recorded for individual providers only; organizations are not gendered. Source: NPPES, last updated 2026-06-21T00:00:00.
View all 6,421 providersNutritionist Providers by State
Provider counts by U.S. state and territory. Select a state to open its provider directory.
All states (nationwide)
6,421
Alabama45Alaska11Arizona143Arkansas28California663Colorado205Connecticut141Delaware23District Of Columbia47Florida397Georgia104Guam4Hawaii17Idaho23Illinois226Indiana40Iowa12Kansas13Kentucky41Louisiana52Maine15Mariana Islands1Maryland318Massachusetts208Michigan124Minnesota76Mississippi10Missouri36Montana36Nebraska33Nevada39New Hampshire40New Jersey234New Mexico34New York673North Carolina186North Dakota3Ohio54Oklahoma30Oregon144Pennsylvania294Puerto Rico384Rhode Island25South Carolina46South Dakota15Tennessee64Texas349Utah32Vermont15Virgin Islands3Virginia167Washington344West Virginia13Wisconsin52Wyoming9
Frequently Asked Questions
133N00000X questionsNPPES lists 6,421 registered providers with this taxonomy code (Nutritionist).
Both. About 18% of these providers are registered as organizations and 82% as individuals.
This taxonomy code does not map to a Medicare specialty code in the current crosswalk.
It is a Level II - Classification code in the NUCC Health Care Provider Taxonomy set.
Use the "Providers by state" directory on this page to open the list of nutritionist providers registered in any U.S. state.
Source: National Uniform Claim Committee (NUCC) Health Care Provider Taxonomy code set, Version 25.1. Provider counts from NPPES. See nucc.org.
