NUCC taxonomy code

163WR0006X - Registered Nurse First Assistant

163WR0006X is the NUCC provider taxonomy code for Registered Nurse First Assistant, a specialization within Registered Nurse (individual providers). 2,980 providers in our latest NPPES snapshot list it as their primary taxonomy.

2,980 providers · primary taxonomy

Code breakdown

Taxonomy code 163WR0006X

Display name Registered Nurse First Assistant

Grouping Nursing Service Providers

Classification Registered Nurse

Specialization Registered Nurse First Assistant

Section Individual

Directory Registered Nurse provider directory

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.

Definition from the NUCC Health Care Provider Taxonomy code set.

Related taxonomy codes

163W00000X Registered Nurse 163WA0400X Addiction (Substance Use Disorder) Registered Nurse (Registered Nurse) 163WA2000X Administrator Registered Nurse (Registered Nurse) 163WP2201X Ambulatory Care Registered Nurse (Registered Nurse) 163WC3500X Cardiac Rehabilitation Registered Nurse (Registered Nurse) 163WC0400X Case Management Registered Nurse (Registered Nurse) 163WC1400X College Health Registered Nurse (Registered Nurse) 163WC1500X Community Health Registered Nurse (Registered Nurse)

Frequently asked questions

What does taxonomy code 163WR0006X mean?

163WR0006X is the NUCC Health Care Provider Taxonomy code for Registered Nurse First Assistant, a specialization of Registered Nurse in the "Nursing Service Providers" grouping. It classifies individual providers.

Where is the taxonomy code used?

Providers select a taxonomy code when applying for an NPI, and it appears on insurance claims (CMS-1500 box 33b / 837 electronic claims) to identify the provider's classification. Payers may require the taxonomy that matches your credential and license.

How do I find providers with taxonomy 163WR0006X?

Browse the Registered Nurse directory, or use the NPI search and filter by state.

Source: CMS NPPES (public data). Snapshot 2026-07-13.