Inpatient Obstetric Registered Nurse: NPI taxonomy code 163WX0003X
Taxonomy code 163WX0003X is Registered Nurse: Obstetric, Inpatient, in the Nursing Service Providers group.
495 active NPIs list it as their primary specialty (<0.1% of all).
| Code | 163WX0003X |
|---|---|
| Group | Nursing Service Providers |
| Classification | Registered Nurse |
| Specialization | Obstetric, Inpatient |
| Used for | individual providers (the code is in NUCC's Individual section) |
| Active NPIs, primary specialty | 495 (494 individuals, 1 organizations) |
What NUCC says: Definition to come... (excerpt of the NUCC 26.1 definition)
Find Inpatient Obstetric Registered Nurse providers
Search the registry for providers listing Obstetric, Inpatient. Pick a state to narrow it down.
Where they are
| State | Active NPIs | Share |
|---|---|---|
| Arizona | 39 | 7.9% |
| California | 37 | 7.5% |
| Texas | 32 | 6.5% |
| Colorado | 27 | 5.5% |
| Georgia | 25 | 5.1% |
| Washington | 22 | 4.4% |
| Florida | 20 | 4.0% |
| New Mexico | 20 | 4.0% |
| North Carolina | 19 | 3.8% |
| Massachusetts | 16 | 3.2% |
Top states by practice location, from the NPPES file of September 13, 2026.
Related specialties
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- 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.