Registered Nurse First Assistant
2,980 active US providers register Registered Nurse First Assistant as their primary taxonomy. That is 0.03% of every provider in the registry, and the 245th largest of 584 specialties with a page here.
- Taxonomy code
- 163WR0006X
- Grouping
- Nursing Service Providers
- Classification
- Registered Nurse
- Specialization
- Registered Nurse First Assistant
- Active providers
- 2,980
- States covered
- 51 of 51
What the code means
A perioperative registered nurse who works in collaboration with the surgeon and other health care team members to achieve optimal outcomes. The RNFA has acquired the necessary knowledge, judgment, and skills specific to the expanded role of RNFA clinical practice. Intraoperatively, the RNFA assists the surgeon.
Definition quoted verbatim from the NUCC Health Care Provider Taxonomy code set, version 25.1. Not paraphrased.
Where they are
Counted by practice location, not by mailing address or by licence state. A provider practising across a state line is counted where they practise.
| State | Providers | Share |
|---|---|---|
| Texas | 436 | |
| California | 320 | |
| New Jersey | 274 | |
| Florida | 259 | |
| New York | 133 | |
| Washington | 133 | |
| Georgia | 129 | |
| Arizona | 126 | |
| Missouri | 119 | |
| Illinois | 98 | |
| Oregon | 98 | |
| Colorado | 81 | |
| Ohio | 76 | |
| Pennsylvania | 62 | |
| Louisiana | 56 |
Showing the 15 largest of 51 states with at least one.
Who registers under this code
2,537 of these are people and 443 are organisations, so 15% of the code is businesses rather than clinicians. Half of them had registered by 2012, and 616 registered in the last five years, 21% of the current population.
That is close to the pace of the registry as a whole.
Where the practices are
By practice-location city. City counts are noisier than state counts, because a large employer files one address for many providers.
- HOUSTON, TX36
- DALLAS, TX34
- FORT WORTH, TX32
- PHOENIX, AZ28
- MODESTO, CA26
- SAINT LOUIS, MO25
- RENO, NV24
- TAMPA, FL23
- TUCSON, AZ22
- PORTLAND, OR21
What else they list
Providers whose primary code is Registered Nurse First Assistant most often carry these secondary taxonomies as well. This is the closest thing the registry has to a map of which specialties overlap in practice, and it is not published anywhere else.
| Also listed | Providers | Share |
|---|---|---|
| Registered Nurse | 102 | 3.4% |
| Surgical Assistant | 31 | 1.0% |
| Family Nurse Practitioner | 16 | 0.5% |
| Surgical Physician Assistant | 14 | 0.5% |
| Nurse Practitioner | 10 | 0.3% |
| Adult Health Nurse Practitioner | 9 | 0.3% |
| Medical-Surgical Registered Nurse | 9 | 0.3% |
| Plastic Surgery Registered Nurse | 9 | 0.3% |
Nearby specialties
Other taxonomies NUCC files under Registered Nurse.
- Medical-Surgical Registered Nurse3,079
- Addiction (Substance Use Disorder) Registered Nurse2,641
- Ambulatory Care Registered Nurse3,325
- Administrator Registered Nurse2,424
- Emergency Registered Nurse3,605
- Diabetes Educator Registered Nurse2,305
Looking up a specific provider
These counts come from the monthly NPPES file. To check one provider, use their NPI: the lookup reads the live registry and shows whether the identifier is still active, which the monthly file cannot tell you about the last few weeks.
Counts from npidata_pfile_20050523-20260712.csv, built 2026-08-09. Primary taxonomy only, deactivated identifiers excluded.