Addiction (Substance Use Disorder) Registered Nurse: NPI taxonomy code 163WA0400X
Taxonomy code 163WA0400X is Registered Nurse: Addiction (Substance Use Disorder), in the Nursing Service Providers group.
2,675 active NPIs list it as their primary specialty (<0.1% of all).
| Code | 163WA0400X |
|---|---|
| Group | Nursing Service Providers |
| Classification | Registered Nurse |
| Specialization | Addiction (Substance Use Disorder) |
| Used for | individual providers (the code is in NUCC's Individual section) |
| Active NPIs, primary specialty | 2,675 (2,645 individuals, 30 organizations) |
What NUCC says: Definition to come... (excerpt of the NUCC 26.1 definition)
Find Addiction (Substance Use Disorder) Registered Nurse providers
Search the registry for providers listing Addiction (Substance Use Disorder). Pick a state to narrow it down.
Where they are
| State | Active NPIs | Share |
|---|---|---|
| Ohio | 435 | 16.3% |
| New York | 342 | 12.8% |
| Wisconsin | 265 | 9.9% |
| California | 144 | 5.4% |
| Massachusetts | 140 | 5.2% |
| Washington | 129 | 4.8% |
| Michigan | 94 | 3.5% |
| Pennsylvania | 80 | 3.0% |
| New Jersey | 70 | 2.6% |
| Illinois | 69 | 2.6% |
Top states by practice location, from the NPPES file of September 13, 2026.
Related specialties
- Registered Nurse 152,513
- School Registered Nurse 11,345
- Psychiatric/Mental Health Registered Nurse 10,894
- 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.