Registered Dietitian: NPI taxonomy code 133V00000X
Taxonomy code 133V00000X is Dietitian, Registered, in the Dietary & Nutritional Service Providers group.
74,778 active NPIs list it as their primary specialty (0.8% of all).
| Code | 133V00000X |
|---|---|
| Group | Dietary & Nutritional Service Providers |
| Classification | Dietitian, Registered |
| Used for | individual providers (the code is in NUCC's Individual section) |
| Active NPIs, primary specialty | 74,778 (68,679 individuals, 6,099 organizations) |
What NUCC says: 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… (excerpt of the NUCC 26.1 definition)
Find Registered Dietitian providers
Search the registry for providers listing Dietitian, Registered. Pick a state to narrow it down.
Where they are
| State | Active NPIs | Share |
|---|---|---|
| California | 7,605 | 10.2% |
| Texas | 5,732 | 7.7% |
| New York | 5,204 | 7.0% |
| Florida | 3,826 | 5.1% |
| Pennsylvania | 3,452 | 4.6% |
| Illinois | 3,124 | 4.2% |
| North Carolina | 3,015 | 4.0% |
| Ohio | 2,723 | 3.6% |
| Massachusetts | 2,555 | 3.4% |
| New Jersey | 2,379 | 3.2% |
Top states by practice location, from the NPPES file of September 13, 2026.
Related specialties
- Pediatric Nutrition Registered Dietitian 1,385
- Metabolic Nutrition Registered Dietitian 878
- Renal Nutrition Registered Dietitian 681
- Obesity and Weight Management Nutrition Registered Dietitian 487
- Sports Dietetics Nutrition Registered Dietitian 272
- Oncology Nutrition Registered Dietitian 131
- Gerontological Nutrition Registered Dietitian 62
Specialty definitions are from the NUCC Health Care Provider Taxonomy (version 26.1). Which code to use on a claim depends on your NPPES record and your payer. See taxonomy codes explained.