Registered Nurse: NPI taxonomy code 163W00000X
Taxonomy code 163W00000X is Registered Nurse, in the Nursing Service Providers group.
152,513 active NPIs list it as their primary specialty (1.6% of all).
| Code | 163W00000X |
|---|---|
| Group | Nursing Service Providers |
| Classification | Registered Nurse |
| Used for | individual providers (the code is in NUCC's Individual section) |
| Active NPIs, primary specialty | 152,513 (151,086 individuals, 1,427 organizations) |
What NUCC says: (1) A registered nurse is a person qualified by graduation from an accredited nursing school (depending upon schooling, a registered nurse may receive either a diploma from a hospital program, an associate degree in nursing (A.D.N.) or a Bachelor of Science degree in nursing (B.S.N.), who is… (excerpt of the NUCC 26.1 definition)
Find Registered Nurse providers
Search the registry for providers listing Registered Nurse. Pick a state to narrow it down.
Where they are
| State | Active NPIs | Share |
|---|---|---|
| New York | 26,067 | 17.1% |
| California | 14,160 | 9.3% |
| Ohio | 9,795 | 6.4% |
| Texas | 9,089 | 6.0% |
| Washington | 5,951 | 3.9% |
| Michigan | 5,746 | 3.8% |
| Pennsylvania | 5,460 | 3.6% |
| Massachusetts | 5,020 | 3.3% |
| Florida | 4,900 | 3.2% |
| Wisconsin | 4,718 | 3.1% |
Top states by practice location, from the NPPES file of September 13, 2026.
Related specialties
- 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
- Adult Psychiatric/Mental Health Registered Nurse 4,535
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.