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

Registered Nurse (NUCC taxonomy 163W00000X) is a Nursing Service Providers classification for licensed or certified nurses practicing within the scope of their authorization. Registered nurses support patients’ physical or mental health, assist with examinations and treatments, and administer medications. This page summarizes active NPI records using this taxonomy as primary and shows how many are marked as sole proprietors in NPPES.

National totals

Active NPI records176,597
Registered sole proprietors63,679 (36.1%)
NUCC taxonomy code163W00000X
GroupingNursing Service Providers

What this specialty covers

(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,

Reading the sole-proprietor share

For Registered Nurse records, the 36.1% sole-proprietor share indicates how many NPPES records have that designation, not how many nurses operate an independent private practice. The field is self-reported and is an imperfect proxy because it does not establish ownership, employment status, billing arrangements, or clinical independence.

By state

StateActive NPIsSole proprietorsShare
New York27,22714,27252.4%
California15,4795,61236.3%
Ohio10,7825,83154.1%
Texas10,7052,66224.9%
Washington6,8422,03029.7%
Pennsylvania6,6971,96229.3%
Florida6,3492,74443.2%
Michigan6,1241,77629.0%
Massachusetts6,0362,02033.5%
Colorado5,2751,62630.8%
Wisconsin5,0892,68252.7%
Tennessee4,5691,11524.4%
Georgia3,8961,40436.0%
Arizona3,8831,14129.4%
Illinois3,8511,04927.2%
Minnesota3,52189525.4%
North Carolina3,21083125.9%
Maryland3,06285427.9%
Oregon2,88271824.9%
Indiana2,51652220.7%
Missouri2,24250022.3%
New Jersey2,18393042.6%
Virginia2,16563229.2%
South Carolina2,16481537.7%
Alabama1,9911,06353.4%
Oklahoma1,75849228.0%
New Mexico1,70533519.6%
Nevada1,49866644.5%
Kansas1,48832421.8%
Kentucky1,38137327.0%
Arkansas1,34825518.9%
Alaska1,31945734.6%
Connecticut1,26437930.0%
Delaware1,24427922.4%
Louisiana1,21838731.8%
Utah1,16527523.6%
Nebraska1,11132529.3%
West Virginia1,09429226.7%
Hawaii98728528.9%
Rhode Island94624525.9%
Iowa88517519.8%
North Dakota88413415.2%
South Dakota81820124.6%
Mississippi78230939.5%
District of Columbia78236346.4%
Maine70422331.7%
Montana57021738.1%
Idaho55115628.3%
New Hampshire53818233.8%
Wyoming40113633.9%
Vermont2388234.5%

New NPI registrations by year

Year first enumeratedNPIs
20177,393
20188,968
20198,990
20209,565
202111,576
202210,439
202311,165
202413,629
202517,087
2026 (partial year)545

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 Registered Nurse providers are there in the United States?

There are 176,597 active NPI records nationally with Registered Nurse as the primary taxonomy. This is an NPI count, not a complete count of every person who works as a registered nurse.

How many Registered Nurses are in private practice?

NPPES flags 63,679 Registered Nurse records as sole proprietors, or 36.1%. That figure is an imperfect proxy for private practice and should not be treated as a direct count of independently practicing nurses.

Which states have the most Registered Nurse NPI records?

New York has the largest listed total, with 27,227 records. California, Ohio, Texas, and Washington are the next largest listed states.

How many new Registered Nurse NPIs were first enumerated in recent years?

The reported first-enumeration counts are 13,629 in 2024, 17,087 in 2025, and 545 in 2026. These counts describe when NPIs were first issued, not necessarily when a nurse began practicing.

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