Dietitian, Registered Taxonomy Code 133V00000X
133V00000X
Level II - Classification
82,240Registered providers
71Medicare specialty
25.1NUCC version
55States & territories
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.
Code Details for 133V00000X
About Taxonomy Code 133V00000X
The taxonomy code 133V00000X identifies Dietitian, Registered 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 82,240 registered providers whose primary or secondary taxonomy is this code. Of these, 7,733 (9%) are registered as organizations and 74,507 (91%) as individual providers. The states with the most dietitian, registered providers are California (7,671), Texas (5,549), New York (5,385). 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
82,240Total providers
7,733Organizations 9%
74,507Individuals 91%
70,296Female
3,927Male
284Undisclosed
Gender is recorded for individual providers only; organizations are not gendered. Source: NPPES, last updated 2026-06-28T00:00:00.
View all 82,240 providersDietitian, Registered Providers by State
Provider counts by U.S. state and territory. Select a state to open its provider directory.
All states (nationwide)
82,240
Alabama810Alaska279Arizona1,673Arkansas635California7,671Colorado1,625Connecticut1,013Delaware315District Of Columbia378Florida4,071Georgia1,789Guam22Hawaii333Idaho595Illinois3,284Indiana1,354Iowa764Kansas689Kentucky929Louisiana987Maine405Mariana Islands10Maryland1,424Massachusetts2,688Michigan2,009Minnesota1,790Mississippi444Missouri1,566Montana408Nebraska450Nevada646New Hampshire560New Jersey2,382New Mexico403New York5,385North Carolina3,219North Dakota350Ohio2,856Oklahoma1,114Oregon1,140Pennsylvania3,634Puerto Rico432Rhode Island477South Carolina948South Dakota289Tennessee1,393Texas5,549Utah729Vermont236Virgin Islands18Virginia1,570Washington2,587West Virginia309Wisconsin1,602Wyoming182
Frequently Asked Questions
133V00000X questionsNPPES lists 82,240 registered providers with this taxonomy code (Dietitian, Registered).
Both. About 9% of these providers are registered as organizations and 91% as individuals.
It crosswalks to Medicare specialty code 71 (Registered Dietitian or Nutrition Professional).
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 dietitian, registered 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.
