163W00000X — Registered Nurse

163W00000X is the NUCC provider taxonomy code for Registered Nurse (individual providers). 146,696 providers in our latest NPPES snapshot list it as their primary taxonomy.

Taxonomy code	163W00000X
Display name	Registered Nurse
Grouping	Nursing Service Providers
Classification	Registered Nurse
Section	Individual
Directory	Registered Nurse provider directory

Definition

(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 licensed or certified by the state, and is practicing within the scope of that license or certification. R.N.'s assist patient in recovering and maintaining their physical or mental health. They assist physicians during treatments and examinations and administer medications. (2) A provider who is trained and educated in a formal nursing education program at an accredited school of nursing, passes a national certification examination, and is licensed by the state to practice nursing. The individual provides nursing services to patients or clients in areas such as health promotion, disease prevention, acute and chronic care and restoration and maintenance of health across the life span.

Definition from the NUCC Health Care Provider Taxonomy code set.

Related taxonomy codes

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)
163WC2100X — Continence Care Registered Nurse (Registered Nurse)

Frequently asked questions

What does taxonomy code 163W00000X mean?

163W00000X is the NUCC Health Care Provider Taxonomy code for 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 163W00000X?

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

Source: CMS NPPES (public data). Snapshot 2026-07-09.