163W00000X
Registered Nurse Registered Nurse First Assistant Taxonomy Code 163WR0006X
163WR0006X
Level III - Area of Specialization
3,641Registered providers
26.0NUCC version
51States & territories
Definition
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.
Code Details for 163WR0006X
About Taxonomy Code 163WR0006X
The taxonomy code 163WR0006X identifies Registered Nurse Registered Nurse First Assistant within the Nursing Service Providers provider grouping. It is a Level III — Area of Specialization code, the most specific tier: it narrows the parent classification to a defined subspecialty.
NPI records show 3,641 registered providers whose primary or secondary taxonomy is this code. Of these, 527 (14%) are registered as organizations and 3,114 (86%) as individual providers. The states with the most registered nurse registered nurse first assistant providers are Texas (492), California (348), Florida (317).
Taxonomy codes are self-selected by the provider based on their education and training; they describe the provider's type and specialty, not the specific services rendered.
Provider Composition & Statistics
3,641Total providers
527Organizations 14%
3,114Individuals 86%
2,411Female
693Male
10Undisclosed
Gender is recorded for individual providers only; organizations are not gendered. Source: NPPES, last updated 2026-07-12T00:00:00.
View all 3,641 providersRegistered Nurse Registered Nurse First Assistant Providers by State
Provider counts by U.S. state and territory. Select a state to open its provider directory.
All states (nationwide)
3,641
Alabama30Alaska23Arizona158Arkansas7California348Colorado96Connecticut11Delaware6District Of Columbia1Florida317Georgia158Hawaii6Idaho11Illinois119Indiana41Iowa16Kansas11Kentucky47Louisiana66Maine65Maryland30Massachusetts14Michigan24Minnesota23Mississippi64Missouri141Montana12Nebraska3Nevada51New Hampshire6New Jersey304New Mexico18New York155North Carolina21North Dakota4Ohio85Oklahoma23Oregon110Pennsylvania70Rhode Island2South Carolina16South Dakota3Tennessee54Texas492Utah8Vermont2Virginia37Washington150West Virginia14Wisconsin21Wyoming28
Frequently Asked Questions
163WR0006X questionsNPPES lists 3,641 registered providers with this taxonomy code (Registered Nurse Registered Nurse First Assistant).
Both. About 14% of these providers are registered as organizations and 86% as individuals.
This taxonomy code does not map to a Medicare specialty code in the current crosswalk.
It is a Level III - Area of Specialization code in the NUCC Health Care Provider Taxonomy set. As an area of specialization, it falls under the Registered Nurse classification (parent code 163W00000X).
Use the "Providers by state" directory on this page to open the list of registered nurse registered nurse first assistant providers registered in any U.S. state.
Source: National Uniform Claim Committee (NUCC) Health Care Provider Taxonomy code set, Version 26.0. Provider counts from NPPES. See nucc.org.
