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

The NUCC taxonomy code 163WC0400X identifies Case Management Registered Nurse within Nursing Service Providers; NUCC has not published an official definition for this classification. This page summarizes the 5,672 active NPI records using it as a primary taxonomy, showing how records are distributed by state, how many are flagged as sole proprietors, and when NPIs were first enumerated.

National totals

Active NPI records5,672
Registered sole proprietors1,900 (33.5%)
NUCC taxonomy code163WC0400X
GroupingNursing Service Providers

Reading the sole-proprietor share

For this specialty, 1,900 records flagged as sole proprietors represent 33.5% of the 5,672 active records, but that percentage should not be read as a measured private-practice rate. The sole-proprietor indicator is a self-reported NPPES field and an imperfect proxy that may not capture all practice arrangements or establish how a clinician works.

By state

StateActive NPIsSole proprietorsShare
California99031732.0%
Texas34511332.8%
Florida32413441.4%
New York26410037.9%
Ohio26012447.7%
Michigan2509738.8%
Washington2046230.4%
Maryland1868646.2%
Colorado1693721.9%
Georgia1656941.8%
Wisconsin1393625.9%
Massachusetts1363525.7%
Virginia1303728.5%
North Carolina1203428.3%
Oklahoma1162723.3%
Illinois1153227.8%
Missouri1073734.6%
Oregon1063129.2%
Minnesota992727.3%
Kansas962324.0%
Arizona852529.4%
Iowa791924.1%
South Carolina743648.6%
Hawaii731926.0%
Indiana701622.9%
Kentucky691927.5%
Arkansas674059.7%
Pennsylvania652741.5%
Tennessee642640.6%
Alaska511223.5%
Nebraska511325.5%
Utah501734.0%
New Mexico46<11not reported
New Jersey411946.3%
Idaho371232.4%
District of Columbia371129.7%
Nevada351440.0%
West Virginia34<11not reported
South Dakota32<11not reported
Alabama30<11not reported
Louisiana29<11not reported
Montana28<11not reported
Wyoming25<11not reported
Rhode Island25<11not reported
Mississippi25<11not reported
Maine20<11not reported
Connecticut17<11not reported
New Hampshire15<11not reported
Delaware11<11not reported

New NPI registrations by year

Year first enumeratedNPIs
2017186
2018246
2019239
2020234
2021404
2022515
2023462
2024611
2025636
2026 (partial year)22

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 Case Management Registered Nurses are there in the US?

There are 5,672 active NPI records nationally with Case Management Registered Nurse as the primary taxonomy.

How many Case Management Registered Nurses are in private practice?

NPPES flags 1,900 records, or 33.5%, as sole proprietors. This is an imperfect proxy for private practice, not a direct count of providers in private practice.

Which states have the most Case Management Registered Nurses?

The largest state counts are California (990), Texas (345), Florida (324), New York (264), and Ohio (260).

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

The counts of NPIs first enumerated were 611 in 2024, 636 in 2025, and 22 in 2026.

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