National totals
| Active NPI records | 6,529 |
| Registered sole proprietors | 2,220 (34.0%) |
| NUCC taxonomy code | 163WC0200X |
| Grouping | Nursing Service Providers |
Reading the sole-proprietor share
For this specialty, the 34.0% share is the portion of active records with this primary taxonomy that NPPES flags as sole proprietors. Because the field is self-reported, it is an imperfect proxy for private practice and should not be treated as a definitive count of independent clinicians, practices, or employment arrangements.
By state
| State | Active NPIs | Sole proprietors | Share |
|---|---|---|---|
| California | 515 | 210 | 40.8% |
| Florida | 494 | 205 | 41.5% |
| Tennessee | 433 | 242 | 55.9% |
| New York | 433 | 143 | 33.0% |
| Texas | 421 | 139 | 33.0% |
| Ohio | 353 | 92 | 26.1% |
| Pennsylvania | 245 | 82 | 33.5% |
| Michigan | 241 | 71 | 29.5% |
| Illinois | 229 | 102 | 44.5% |
| Arizona | 227 | 69 | 30.4% |
| North Carolina | 212 | 51 | 24.1% |
| Georgia | 177 | 72 | 40.7% |
| Virginia | 163 | 34 | 20.9% |
| Maryland | 156 | 48 | 30.8% |
| South Carolina | 152 | 41 | 27.0% |
| Missouri | 146 | 32 | 21.9% |
| Washington | 125 | 43 | 34.4% |
| New Jersey | 115 | 39 | 33.9% |
| Indiana | 114 | 26 | 22.8% |
| Colorado | 114 | 45 | 39.5% |
| Massachusetts | 112 | 32 | 28.6% |
| Minnesota | 98 | 33 | 33.7% |
| Alabama | 95 | 37 | 38.9% |
| Kansas | 86 | 18 | 20.9% |
| Oregon | 84 | 23 | 27.4% |
| Oklahoma | 77 | 25 | 32.5% |
| Wisconsin | 70 | 25 | 35.7% |
| Louisiana | 64 | 25 | 39.1% |
| Delaware | 63 | 18 | 28.6% |
| Kentucky | 58 | 12 | 20.7% |
| Connecticut | 57 | 16 | 28.1% |
| Nevada | 55 | 22 | 40.0% |
| New Mexico | 47 | 11 | 23.4% |
| Iowa | 47 | <11 | not reported |
| District of Columbia | 46 | 11 | 23.9% |
| Utah | 43 | 14 | 32.6% |
| Arkansas | 42 | 12 | 28.6% |
| West Virginia | 41 | 12 | 29.3% |
| Mississippi | 34 | 16 | 47.1% |
| New Hampshire | 27 | <11 | not reported |
| North Dakota | 26 | <11 | not reported |
| Idaho | 22 | <11 | not reported |
| Alaska | 21 | <11 | not reported |
| Nebraska | 21 | <11 | not reported |
| Maine | 20 | <11 | not reported |
| South Dakota | 17 | <11 | not reported |
| Wyoming | 17 | <11 | not reported |
| Rhode Island | 14 | <11 | not reported |
| Montana | 11 | <11 | not reported |
New NPI registrations by year
| Year first enumerated | NPIs |
|---|---|
| 2017 | 195 |
| 2018 | 249 |
| 2019 | 334 |
| 2020 | 492 |
| 2021 | 632 |
| 2022 | 577 |
| 2023 | 714 |
| 2024 | 917 |
| 2025 | 1,179 |
| 2026 (partial year) | 27 |
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.
- NUCC does not publish an official definition for this taxonomy, so the label is not a detailed description of services.
- The count covers active NPI records with this taxonomy as the primary classification and does not measure clinical workload, staffing, or patient volume.
- Providers are counted once, by their primary taxonomy code only.
Common questions
How many Critical Care Medicine Registered Nurses are there in the United States?
The page reports 6,529 active NPI records with this taxonomy as the primary taxonomy. This is a count of records, not a direct measure of clinical workload, staffing, or patient volume.
How many Critical Care Medicine Registered Nurses are in private practice?
NPPES flags 2,220 records, or 34.0%, as sole proprietors. This self-reported flag is an imperfect proxy for private practice, not a definitive private-practice count.
Which states have the most Critical Care Medicine Registered Nurses?
The largest reported state counts are California with 515, Florida with 494, Tennessee with 433, New York with 433, and Texas with 421.
How many NPIs for this specialty were first enumerated recently?
NPIs with this primary taxonomy were first enumerated 917 times in 2024, 1,179 times in 2025, and 27 times in 2026.
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