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Emergency Registered Nurse: how many are there, and how many are in private practice?

Emergency Registered Nurse is a NUCC taxonomy classification for providers whose NPI records use code 163WE0003X in the Nursing Service Providers grouping. NUCC does not publish an official definition for this taxonomy, so the classification is an administrative label rather than a complete description of a clinician’s work. This page shows the active national footprint, state distribution, and NPPES sole-proprietor share.

National totals

Active NPI records4,265
Registered sole proprietors1,410 (33.1%)
NUCC taxonomy code163WE0003X
GroupingNursing Service Providers

Reading the sole-proprietor share

For this specialty, 1,410 records, or 33.1%, carry the sole-proprietor indicator in NPPES. Because that field is self-reported, the percentage is an imperfect proxy for private practice and does not by itself show whether an Emergency Registered Nurse works independently, belongs to a group, or is employed by a hospital or other organization. Use it as a description of NPPES reporting, not as a definitive measure of employment arrangements.

By state

StateActive NPIsSole proprietorsShare
California41117241.8%
Texas26910539.0%
Arizona2396728.0%
Indiana2265926.1%
Florida2229241.4%
New Mexico2066330.6%
New York2029748.0%
Pennsylvania1685029.8%
Washington1384734.1%
Georgia1114136.9%
Illinois1073229.9%
Kansas1042927.9%
North Carolina1033029.1%
Ohio1022928.4%
Michigan1013534.7%
Oklahoma993434.3%
Missouri912628.6%
Tennessee811822.2%
Colorado792835.4%
Massachusetts742432.4%
Virginia711622.5%
Delaware662233.3%
South Carolina582034.5%
Alabama562442.9%
Maryland551629.1%
New Jersey532037.7%
South Dakota521426.9%
Oregon501326.0%
North Dakota48<11not reported
Kentucky471225.5%
Minnesota471225.5%
Montana461839.1%
Wisconsin42<11not reported
Nevada391641.0%
Utah32<11not reported
Alaska30<11not reported
Connecticut30<11not reported
Wyoming30<11not reported
Arkansas29<11not reported
Iowa29<11not reported
Louisiana23<11not reported
West Virginia19<11not reported
Mississippi19<11not reported
Idaho19<11not reported
New Hampshire18<11not reported
Maine17<11not reported
Nebraska16<11not reported
Rhode Island13<11not reported
Hawaii12<11not reported

New NPI registrations by year

Year first enumeratedNPIs
2017147
2018187
2019264
2020325
2021309
2022317
2023378
2024475
2025943
2026 (partial year)19

Counts reflect the year each NPI was first issued, among records still active today. The final year is partial: this data covers through 2026-01-11.

Data notes

Source: CMS National Plan and Provider Enumeration System (NPPES) Data Dissemination file, FOIA-disclosable public data under CMS-6060-N. Aggregated by Hero EMR on 2026-08-03; deactivated NPIs excluded; specialty assigned from the primary taxonomy code (NUCC 25.1). Counts below 11 are suppressed. Individual providers are never published. All provider data pages.

Common questions

How many Emergency Registered Nurses are there in the United States?

There are 4,265 active NPI records nationally with Emergency Registered Nurse as the primary taxonomy. This is a count of NPI records, not a direct measure of distinct people or currently practicing nurses.

How many Emergency Registered Nurses are in private practice?

NPPES flags 1,410 records, or 33.1%, as sole proprietors. This self-reported field is an imperfect proxy for private practice, so it should not be read as a definitive count of privately practicing Emergency Registered Nurses.

Which states have the most Emergency Registered Nurse NPI records?

The largest reported counts are California (411), Texas (269), Arizona (239), Indiana (226), and Florida (222).

How many new Emergency Registered Nurse NPIs were enumerated recently?

NPIs were first enumerated in the most recent full years available as follows: 475 in 2024, 943 in 2025, and 19 in 2026. These are enumeration counts, not a measure of net growth.

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