Registered Nurse vs Registered Nurse First Assistant
Registered Nurse has 58.4 times as many registry records as Registered Nurse First Assistant: 148,485 against 2,542. Each count is the NPPES records whose primary taxonomy is the specialty, so it measures how providers describe their main practice, not everyone trained in it.
Registered Nurse: 148,485 records in 56 states
Registered Nurse First Assistant: 2,542 records in 51 states
By state, with records per 100,000 residents
| State | Registered Nurse | Registered Nurse First Assistant | Per 100,000 (first) | Per 100,000 (second) |
|---|---|---|---|---|
| New York | 25,740 | 127 | 131.5 | 0.6 |
| California | 13,506 | 303 | 34.7 | 0.8 |
| Ohio | 9,656 | 69 | 81.9 | 0.6 |
| Texas | 8,921 | 310 | 29.2 | 1.0 |
| Washington | 5,708 | 124 | 73.1 | 1.6 |
| Michigan | 5,589 | 23 | 55.7 | 0.2 |
| Pennsylvania | 5,372 | 60 | 41.4 | 0.5 |
| Massachusetts | 4,985 | 13 | 71.2 | 0.2 |
| Florida | 4,722 | 215 | 20.9 | 1.0 |
| Colorado | 4,610 | 60 | 78.4 | 1.0 |
| Wisconsin | 4,628 | 15 | 78.3 | 0.3 |
| Minnesota | 3,418 | 19 | 59.6 | 0.3 |
| Georgia | 3,284 | 102 | 29.8 | 0.9 |
| Tennessee | 3,269 | 37 | 45.9 | 0.5 |
| Arizona | 3,124 | 95 | 42.0 | 1.3 |
| Illinois | 2,628 | 90 | 20.9 | 0.7 |
| Oregon | 2,449 | 90 | 57.9 | 2.1 |
| Maryland | 2,453 | 24 | 39.7 | 0.4 |
| North Carolina | 2,100 | 20 | 19.4 | 0.2 |
| New Jersey | 1,613 | 213 | 17.4 | 2.3 |
| South Carolina | 1,761 | 13 | 32.8 | 0.2 |
| Missouri | 1,586 | 103 | 25.6 | 1.7 |
| New Mexico | 1,554 | 13 | 73.5 | 0.6 |
| Alabama | 1,486 | 21 | 29.1 | 0.4 |
| Indiana | 1,480 | 26 | 21.6 | 0.4 |
| Nevada | 1,458 | 36 | 45.6 | 1.1 |
| Oklahoma | 1,456 | 18 | 35.9 | 0.4 |
| Virginia | 1,282 | 43 | 14.8 | 0.5 |
| Arkansas | 1,216 | 5 | 39.6 | 0.2 |
| Alaska | 1,201 | 12 | 163.8 | 1.6 |
| West Virginia | 1,003 | 11 | 56.7 | 0.6 |
| Kansas | 997 | 8 | 33.9 | 0.3 |
| Utah | 990 | 6 | 29.0 | 0.2 |
| Delaware | 967 | 4 | 93.7 | 0.4 |
| Louisiana | 869 | 45 | 19.0 | 1.0 |
| Nebraska | 909 | 2 | 45.9 | 0.1 |
| Hawaii | 891 | 5 | 62.1 | 0.3 |
| Kentucky | 864 | 26 | 19.1 | 0.6 |
| North Dakota | 856 | 3 | 109.2 | 0.4 |
| Iowa | 833 | 12 | 26.0 | 0.4 |
| Rhode Island | 813 | 2 | 74.2 | 0.2 |
| District of Columbia | 812 | 1 | 119.6 | 0.1 |
| South Dakota | 799 | 2 | 86.9 | 0.2 |
| Connecticut | 751 | 7 | 20.8 | 0.2 |
| Maine | 612 | 27 | 43.8 | 1.9 |
| Mississippi | 596 | 42 | 20.3 | 1.4 |
| Montana | 524 | 10 | 46.3 | 0.9 |
| Idaho | 395 | 8 | 20.1 | 0.4 |
| Wyoming | 367 | 20 | 62.8 | 3.4 |
| New Hampshire | 377 | 1 | 26.9 | 0.1 |
| Vermont | 201 | 1 | 31.0 | 0.2 |
Source: CMS NPPES (NPPES files on CMS.gov), primary NUCC taxonomy by practice state; 2023 population estimates (census.gov).
Common questions
How many Registered Nurse providers are there vs Registered Nurse First Assistant?
There are 148,485 Registered Nurse and 2,542 Registered Nurse First Assistant records in the CMS NPPES registry, counted by primary taxonomy.
Which specialty is spread across more states?
Registered Nurse has records in 56 states and territories, against 51.
Where is the data from?
Provider counts are from the CMS National Plan and Provider Enumeration System (NPPES). Per-capita rates use 2023 Census population estimates.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of the NPPES file of Aug 9, 2026.