Occupational Therapy Assistant Providers — NPI Directory
41,620 active Occupational Therapy Assistant providers hold an NPI in the latest NPPES snapshot. Occupational Therapy Assistant falls under the “Respiratory, Developmental, Rehabilitative and Restorative Service Providers” taxonomy grouping and spans 5 NUCC taxonomy codes. Browse by state, or look a provider up by name or NPI number.
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Occupational Therapy Assistant by state
- Occupational Therapy Assistant in Texas (4,289)
- Occupational Therapy Assistant in Florida (3,847)
- Occupational Therapy Assistant in New York (2,750)
- Occupational Therapy Assistant in Ohio (2,419)
- Occupational Therapy Assistant in Pennsylvania (2,190)
- Occupational Therapy Assistant in California (1,877)
- Occupational Therapy Assistant in Illinois (1,515)
- Occupational Therapy Assistant in Wisconsin (1,461)
- Occupational Therapy Assistant in North Carolina (1,357)
- Occupational Therapy Assistant in Indiana (1,096)
- Occupational Therapy Assistant in Virginia (1,093)
- Occupational Therapy Assistant in Missouri (1,060)
- Occupational Therapy Assistant in Arkansas (1,059)
- Occupational Therapy Assistant in Arizona (1,058)
- Occupational Therapy Assistant in Tennessee (1,011)
- Occupational Therapy Assistant in Oklahoma (940)
- Occupational Therapy Assistant in Michigan (905)
- Occupational Therapy Assistant in Washington (812)
- Occupational Therapy Assistant in South Carolina (749)
- Occupational Therapy Assistant in Massachusetts (745)
- Occupational Therapy Assistant in Kentucky (718)
- Occupational Therapy Assistant in Colorado (693)
- Occupational Therapy Assistant in Maryland (660)
- Occupational Therapy Assistant in New Jersey (652)
- Occupational Therapy Assistant in Kansas (590)
- Occupational Therapy Assistant in Georgia (570)
- Occupational Therapy Assistant in Connecticut (450)
- Occupational Therapy Assistant in Minnesota (415)
- Occupational Therapy Assistant in Oregon (392)
- Occupational Therapy Assistant in West Virginia (350)
- Occupational Therapy Assistant in Mississippi (345)
- Occupational Therapy Assistant in New Mexico (306)
- Occupational Therapy Assistant in Alabama (278)
- Occupational Therapy Assistant in New Hampshire (266)
- Occupational Therapy Assistant in Iowa (264)
- Occupational Therapy Assistant in Maine (261)
- Occupational Therapy Assistant in Delaware (239)
- Occupational Therapy Assistant in Nebraska (238)
- Occupational Therapy Assistant in Louisiana (229)
- Occupational Therapy Assistant in Nevada (217)
- Occupational Therapy Assistant in Puerto Rico (186)
- Occupational Therapy Assistant in Rhode Island (174)
- Occupational Therapy Assistant in Idaho (162)
- Occupational Therapy Assistant in Utah (136)
- Occupational Therapy Assistant in North Dakota (106)
- Occupational Therapy Assistant in South Dakota (104)
- Occupational Therapy Assistant in Montana (92)
- Occupational Therapy Assistant in Hawaii (85)
- Occupational Therapy Assistant in Wyoming (66)
- Occupational Therapy Assistant in Vermont (55)
- Occupational Therapy Assistant in Alaska (50)
Taxonomy codes for Occupational Therapy Assistant
- 224Z00000X — Occupational Therapy Assistant (41,325 providers)
- 224ZR0403X — Driving and Community Mobility Occupational Therapy Assistant (75 providers)
- 224ZE0001X — Environmental Modification Occupational Therapy Assistant (129 providers)
- 224ZF0002X — Feeding, Eating & Swallowing Occupational Therapy Assistant (68 providers)
- 224ZL0004X — Low Vision Occupational Therapy Assistant (23 providers)
Frequently asked questions
How do I find a Occupational Therapy Assistant provider's NPI number?
Search by name with the NPI search, or browse by state below. Every profile shows the provider's NPI, taxonomy code, practice address, and NPPES status.
What taxonomy codes does Occupational Therapy Assistant use?
Occupational Therapy Assistant covers 5 NUCC taxonomy codes, including 224Z00000X (Occupational Therapy Assistant). Each code page explains when it applies.
How many Occupational Therapy Assistant providers are there in the U.S.?
Our latest NPPES snapshot lists 41,620 active providers with Occupational Therapy Assistant as their primary taxonomy.
Source: CMS NPPES (public data). Snapshot 2026-07-09.