Environmental Modification Occupational Therapy Assistant vs Occupational Therapy Assistant
Occupational Therapy Assistant has 326.4 times as many registry records as Environmental Modification Occupational Therapy Assistant: 41,451 against 127. 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.
Environmental Modification Occupational Therapy Assistant: 127 records in 35 states
Environmental Modification Occupational Therapy Assistant nationwide →
Occupational Therapy Assistant: 41,451 records in 53 states
By state, with records per 100,000 residents
| State | Environmental Modification Occupational Therapy Assistant | Occupational Therapy Assistant | Per 100,000 (first) | Per 100,000 (second) |
|---|---|---|---|---|
| Texas | 19 | 4,278 | 0.1 | 14.0 |
| Florida | 7 | 3,825 | 0.0 | 16.9 |
| New York | 4 | 2,732 | 0.0 | 14.0 |
| Ohio | 4 | 2,421 | 0.0 | 20.5 |
| Pennsylvania | 10 | 2,155 | 0.1 | 16.6 |
| California | 11 | 1,869 | 0.0 | 4.8 |
| Illinois | 7 | 1,498 | 0.1 | 11.9 |
| Wisconsin | 2 | 1,460 | 0.0 | 24.7 |
| North Carolina | 4 | 1,357 | 0.0 | 12.5 |
| Indiana | 7 | 1,091 | 0.1 | 15.9 |
| Virginia | 2 | 1,086 | 0.0 | 12.6 |
| Missouri | 4 | 1,063 | 0.1 | 17.2 |
| Arkansas | 1 | 1,060 | 0.0 | 34.6 |
| Arizona | 2 | 1,048 | 0.0 | 14.1 |
| Tennessee | 4 | 1,009 | 0.1 | 14.2 |
| Oklahoma | 1 | 948 | 0.0 | 23.4 |
| Michigan | 5 | 903 | 0.0 | 9.0 |
| Washington | 2 | 806 | 0.0 | 10.3 |
| Massachusetts | 4 | 741 | 0.1 | 10.6 |
| South Carolina | 0 | 744 | 0.0 | 13.8 |
| Kentucky | 0 | 714 | 0.0 | 15.8 |
| Colorado | 2 | 686 | 0.0 | 11.7 |
| Maryland | 1 | 653 | 0.0 | 10.6 |
| New Jersey | 4 | 648 | 0.0 | 7.0 |
| Kansas | 1 | 589 | 0.0 | 20.0 |
| Georgia | 2 | 566 | 0.0 | 5.1 |
| Connecticut | 0 | 447 | 0.0 | 12.4 |
| Minnesota | 3 | 421 | 0.1 | 7.3 |
| Oregon | 1 | 388 | 0.0 | 9.2 |
| West Virginia | 1 | 349 | 0.1 | 19.7 |
| Mississippi | 0 | 349 | 0.0 | 11.9 |
| New Mexico | 0 | 307 | 0.0 | 14.5 |
| Alabama | 1 | 280 | 0.0 | 5.5 |
| Iowa | 0 | 266 | 0.0 | 8.3 |
| New Hampshire | 1 | 265 | 0.1 | 18.9 |
| Maine | 0 | 259 | 0.0 | 18.6 |
| Delaware | 0 | 237 | 0.0 | 23.0 |
| Nebraska | 2 | 235 | 0.1 | 11.9 |
| Louisiana | 3 | 226 | 0.1 | 4.9 |
| Nevada | 2 | 218 | 0.1 | 6.8 |
| Rhode Island | 0 | 173 | 0.0 | 15.8 |
| Idaho | 0 | 164 | 0.0 | 8.3 |
| Utah | 1 | 134 | 0.0 | 3.9 |
| South Dakota | 0 | 110 | 0.0 | 12.0 |
| North Dakota | 0 | 108 | 0.0 | 13.8 |
| Montana | 0 | 88 | 0.0 | 7.8 |
| Hawaii | 0 | 86 | 0.0 | 6.0 |
| Wyoming | 0 | 65 | 0.0 | 11.1 |
| Vermont | 0 | 54 | 0.0 | 8.3 |
| Alaska | 0 | 52 | 0.0 | 7.1 |
| District of Columbia | 1 | 28 | 0.1 | 4.1 |
Source: CMS NPPES (NPPES files on CMS.gov), primary NUCC taxonomy by practice state; 2023 population estimates (census.gov).
Common questions
How many Environmental Modification Occupational Therapy Assistant providers are there vs Occupational Therapy Assistant?
There are 127 Environmental Modification Occupational Therapy Assistant and 41,451 Occupational Therapy Assistant records in the CMS NPPES registry, counted by primary taxonomy.
Which specialty is spread across more states?
Occupational Therapy Assistant has records in 53 states and territories, against 35.
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.