Nutrition Support Registered Nurse: NPI taxonomy code 163WN1003X
Taxonomy code 163WN1003X is Registered Nurse: Nutrition Support, in the Nursing Service Providers group.
125 active NPIs list it as their primary specialty (<0.1% of all).
| Code | 163WN1003X |
|---|---|
| Group | Nursing Service Providers |
| Classification | Registered Nurse |
| Specialization | Nutrition Support |
| Used for | individual providers (the code is in NUCC's Individual section) |
| Active NPIs, primary specialty | 125 (117 individuals, 8 organizations) |
What NUCC says: Definition to come... (excerpt of the NUCC 26.1 definition)
Find Nutrition Support Registered Nurse providers
Search the registry for providers listing Nutrition Support. Pick a state to narrow it down.
Where they are
| State | Active NPIs | Share |
|---|---|---|
| California | 18 | 14.4% |
| Illinois | 7 | 5.6% |
| Texas | 7 | 5.6% |
| Arizona | 7 | 5.6% |
| Massachusetts | 6 | 4.8% |
| New York | 5 | 4.0% |
| Ohio | 4 | 3.2% |
| Maryland | 4 | 3.2% |
| Michigan | 4 | 3.2% |
| Washington | 4 | 3.2% |
Top states by practice location, from the NPPES file of September 13, 2026.
Related specialties
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- Home Health Registered Nurse 10,501
- Community Health Registered Nurse 7,518
- Case Management Registered Nurse 5,842
- General Practice Registered Nurse 4,833
- Lactation Consultant (Registered Nurse) 4,617
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.