National totals
| Active NPI records | 5,672 |
| Registered sole proprietors | 1,900 (33.5%) |
| NUCC taxonomy code | 163WC0400X |
| Grouping | Nursing 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
| State | Active NPIs | Sole proprietors | Share |
|---|---|---|---|
| California | 990 | 317 | 32.0% |
| Texas | 345 | 113 | 32.8% |
| Florida | 324 | 134 | 41.4% |
| New York | 264 | 100 | 37.9% |
| Ohio | 260 | 124 | 47.7% |
| Michigan | 250 | 97 | 38.8% |
| Washington | 204 | 62 | 30.4% |
| Maryland | 186 | 86 | 46.2% |
| Colorado | 169 | 37 | 21.9% |
| Georgia | 165 | 69 | 41.8% |
| Wisconsin | 139 | 36 | 25.9% |
| Massachusetts | 136 | 35 | 25.7% |
| Virginia | 130 | 37 | 28.5% |
| North Carolina | 120 | 34 | 28.3% |
| Oklahoma | 116 | 27 | 23.3% |
| Illinois | 115 | 32 | 27.8% |
| Missouri | 107 | 37 | 34.6% |
| Oregon | 106 | 31 | 29.2% |
| Minnesota | 99 | 27 | 27.3% |
| Kansas | 96 | 23 | 24.0% |
| Arizona | 85 | 25 | 29.4% |
| Iowa | 79 | 19 | 24.1% |
| South Carolina | 74 | 36 | 48.6% |
| Hawaii | 73 | 19 | 26.0% |
| Indiana | 70 | 16 | 22.9% |
| Kentucky | 69 | 19 | 27.5% |
| Arkansas | 67 | 40 | 59.7% |
| Pennsylvania | 65 | 27 | 41.5% |
| Tennessee | 64 | 26 | 40.6% |
| Alaska | 51 | 12 | 23.5% |
| Nebraska | 51 | 13 | 25.5% |
| Utah | 50 | 17 | 34.0% |
| New Mexico | 46 | <11 | not reported |
| New Jersey | 41 | 19 | 46.3% |
| Idaho | 37 | 12 | 32.4% |
| District of Columbia | 37 | 11 | 29.7% |
| Nevada | 35 | 14 | 40.0% |
| West Virginia | 34 | <11 | not reported |
| South Dakota | 32 | <11 | not reported |
| Alabama | 30 | <11 | not reported |
| Louisiana | 29 | <11 | not reported |
| Montana | 28 | <11 | not reported |
| Wyoming | 25 | <11 | not reported |
| Rhode Island | 25 | <11 | not reported |
| Mississippi | 25 | <11 | not reported |
| Maine | 20 | <11 | not reported |
| Connecticut | 17 | <11 | not reported |
| New Hampshire | 15 | <11 | not reported |
| Delaware | 11 | <11 | not reported |
New NPI registrations by year
| Year first enumerated | NPIs |
|---|---|
| 2017 | 186 |
| 2018 | 246 |
| 2019 | 239 |
| 2020 | 234 |
| 2021 | 404 |
| 2022 | 515 |
| 2023 | 462 |
| 2024 | 611 |
| 2025 | 636 |
| 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
- The sole-proprietor field is self-reported by the provider in NPPES and is an imperfect proxy for private practice.
- A sole-proprietor count shown as <11 is suppressed: the true value is below 11, which could include zero.
- - The data count active NPI records with this taxonomy as the primary classification, not every person who may provide case management nursing services.
- - NPPES fields are provider-reported and may be incomplete or outdated; sole-proprietor status does not equal private-practice status.
- - The first-enumeration year records when an NPI was issued, not necessarily when case-management work began or when current activity started.
- Providers are counted once, by their primary taxonomy code only.
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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