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Occupational Therapy Assistant Providers - NPI Directory

Active Occupational Therapy Assistant providers 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.

41,781 providers with an NPI

Occupational Therapy Assistant by state

Texas 4,304 Florida 3,866 New York 2,755 Ohio 2,426 Pennsylvania 2,192 California 1,894 Illinois 1,516 Wisconsin 1,466 North Carolina 1,366 Indiana 1,101 Virginia 1,097 Missouri 1,069 … 39 more states below …

Active Occupational Therapy Assistant providers by primary practice state, latest NPPES snapshot.

All states, A-Z

State	Providers
Occupational Therapy Assistant in Alabama	280
Occupational Therapy Assistant in Alaska	52
Occupational Therapy Assistant in Arizona	1,063
Occupational Therapy Assistant in Arkansas	1,063
Occupational Therapy Assistant in California	1,894
Occupational Therapy Assistant in Colorado	693
Occupational Therapy Assistant in Connecticut	451
Occupational Therapy Assistant in Delaware	238
Occupational Therapy Assistant in Florida	3,866
Occupational Therapy Assistant in Georgia	573
Occupational Therapy Assistant in Hawaii	86
Occupational Therapy Assistant in Idaho	163
Occupational Therapy Assistant in Illinois	1,516
Occupational Therapy Assistant in Indiana	1,101
Occupational Therapy Assistant in Iowa	267
Occupational Therapy Assistant in Kansas	592
Occupational Therapy Assistant in Kentucky	719
Occupational Therapy Assistant in Louisiana	230
Occupational Therapy Assistant in Maine	261
Occupational Therapy Assistant in Maryland	664
Occupational Therapy Assistant in Massachusetts	746
Occupational Therapy Assistant in Michigan	906
Occupational Therapy Assistant in Minnesota	421
Occupational Therapy Assistant in Mississippi	351
Occupational Therapy Assistant in Missouri	1,069
Occupational Therapy Assistant in Montana	92

State	Providers
Occupational Therapy Assistant in Nebraska	237
Occupational Therapy Assistant in Nevada	218
Occupational Therapy Assistant in New Hampshire	267
Occupational Therapy Assistant in New Jersey	653
Occupational Therapy Assistant in New Mexico	307
Occupational Therapy Assistant in New York	2,755
Occupational Therapy Assistant in North Carolina	1,366
Occupational Therapy Assistant in North Dakota	108
Occupational Therapy Assistant in Ohio	2,426
Occupational Therapy Assistant in Oklahoma	948
Occupational Therapy Assistant in Oregon	392
Occupational Therapy Assistant in Pennsylvania	2,192
Occupational Therapy Assistant in Puerto Rico	188
Occupational Therapy Assistant in Rhode Island	173
Occupational Therapy Assistant in South Carolina	751
Occupational Therapy Assistant in South Dakota	106
Occupational Therapy Assistant in Tennessee	1,014
Occupational Therapy Assistant in Texas	4,304
Occupational Therapy Assistant in Utah	135
Occupational Therapy Assistant in Vermont	55
Occupational Therapy Assistant in Virginia	1,097
Occupational Therapy Assistant in Washington	811
Occupational Therapy Assistant in West Virginia	350
Occupational Therapy Assistant in Wisconsin	1,466
Occupational Therapy Assistant in Wyoming	67

Taxonomy codes for Occupational Therapy Assistant

224Z00000X Occupational Therapy Assistant 41,485 224ZR0403X Driving and Community Mobility Occupational Therapy Assistant 75 224ZE0001X Environmental Modification Occupational Therapy Assistant 130 224ZF0002X Feeding, Eating & Swallowing Occupational Therapy Assistant 68 224ZL0004X Low Vision Occupational Therapy Assistant 23

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 41,781 active providers with Occupational Therapy Assistant as their primary taxonomy.

Source: CMS NPPES (public data). Snapshot 2026-07-13.