Registered Nurse Taxonomy Code 163W00000X
163W00000X
Level II - Classification
212,000Registered providers
25.1NUCC version
57States & territories
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.
Code Details for 163W00000X
About Taxonomy Code 163W00000X
The taxonomy code 163W00000X identifies Registered Nurse within the Nursing Service Providers provider grouping. It is a Level II — Classification code, which names a provider's occupation or service within the broader provider grouping.
NPI records show 212,000 registered providers whose primary or secondary taxonomy is this code. Of these, 3,300 (2%) are registered as organizations and 208,700 (98%) as individual providers. The states with the most registered nurse providers are New York (29,301), California (17,380), Ohio (12,154).
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
212,000Total providers
3,300Organizations 2%
208,700Individuals 98%
181,125Female
26,335Male
1,240Undisclosed
Gender is recorded for individual providers only; organizations are not gendered. Source: NPPES, last updated 2026-06-21T00:00:00.
View all 212,000 providersRegistered Nurse Providers by State
Provider counts by U.S. state and territory. Select a state to open its provider directory.
All states (nationwide)
212,000
Alabama2,247Alaska1,472American Samoa9Arizona4,426Arkansas1,497California17,380Colorado5,843Connecticut1,565Delaware1,439District Of Columbia1,015Florida7,565Georgia4,429Guam62Hawaii1,137Idaho654Illinois4,586Indiana3,007Iowa970Kansas1,767Kentucky1,668Louisiana1,445Maine824Mariana Islands5Maryland3,572Massachusetts6,740Michigan6,663Minnesota3,948Mississippi929Missouri2,744Montana638Nebraska1,216Nevada1,699New Hampshire710New Jersey2,723New Mexico1,866New York29,301North Carolina3,907North Dakota985Ohio12,154Oklahoma1,921Oregon3,478Palau1Pennsylvania7,513Puerto Rico790Rhode Island1,056South Carolina2,392South Dakota858Tennessee5,234Texas11,783Utah1,308Vermont304Virgin Islands23Virginia2,660Washington7,797West Virginia1,193Wisconsin5,584Wyoming444
Frequently Asked Questions
163W00000X questionsNPPES lists 212,000 registered providers with this taxonomy code (Registered Nurse).
Both. About 2% of these providers are registered as organizations and 98% as individuals.
This taxonomy code does not map to a Medicare specialty code in the current crosswalk.
It is a Level II - Classification code in the NUCC Health Care Provider Taxonomy set.
Use the "Providers by state" directory on this page to open the list of registered nurse providers registered in any U.S. state.
Source: National Uniform Claim Committee (NUCC) Health Care Provider Taxonomy code set, Version 25.1. Provider counts from NPPES. See nucc.org.
