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Occupational Therapy Assistant Environmental Modification Taxonomy Code 224ZE0001X

224ZE0001X Level III - Area of Specialization
242Registered providers
25.1NUCC version
44States & territories
Definition

Occupational therapy assistants provide environmental modifications under the supervision of an occupational therapist. OTAs develop and implement an individualized occupational therapy environmental modification plan that reflects the relevant contexts of the client and relevant others and maximizes current and future occupational performance, safety, and participation of the client. Clients receive environmental modification recommendations and interventions that enable them to meet occupational performance and participation goals and that have adequate flexibility to accommodate for their future needs.

Code Details for 224ZE0001X

GroupingRespiratory, Developmental, Rehabilitative And Restorative Service Providers
ClassificationOccupational Therapy Assistant
SpecializationEnvironmental Modification
Code levelLevel III - Area of Specialization
Last updatedJanuary 01, 2026
Notes / sourceSource: The Guide to Occupational Therapy Practice, 2nd edition. Bethesda: American Occupational Therapy Association, 2007. [7/1/2008: new] Additional Resources: The American Occupational Therapy Association (AOTA) does offer voluntary specialty certification for an Environmental Modification Occupational Therapy Assistant if the applicant meets the following requirements: <ul> <li>Professional or technical degree or equivalent in occupational therapy. <li>Certified or licensed by and in good standing with an AOTA recognized credentialing or regulatory body. <li>Minimum of 2,000 hours of experience as an occupational therapist or occupational therapy assistant. <li>600 hours of experience delivering occupational therapy services in the certification area to clients (individuals, groups, or populations) in the last 3 calendar years. Service delivery may be paid or voluntary. <li>Verification of employment. </ul>Fact Sheet: Home Modifications and OT, AOTA Website: Specialty Certifications

About Taxonomy Code 224ZE0001X

The taxonomy code 224ZE0001X identifies Occupational Therapy Assistant Environmental Modification within the Respiratory, Developmental, Rehabilitative And Restorative Service Providers provider grouping. It is a Level III — Area of Specialization code, the most specific tier: it narrows the parent classification to a defined subspecialty.

NPI records show 242 registered providers whose primary or secondary taxonomy is this code. Of these, 50 (21%) are registered as organizations and 192 (79%) as individual providers. The states with the most occupational therapy assistant environmental modification providers are Texas (24), California (16), Florida (16).

Taxonomy codes are self-selected by the provider based on their education and training; they describe the provider's type and specialty, not the specific services rendered.

Provider Composition & Statistics

242Total providers
50Organizations 21%
192Individuals 79%
149Female
43Male

Among individual providers:

Gender is recorded for individual providers only; organizations are not gendered. Source: NPPES, last updated 2026-06-21T00:00:00.

View all 242 providers

Occupational Therapy Assistant Environmental Modification Providers by State

Provider counts by U.S. state and territory. Select a state to open its provider directory.

All states (nationwide) 242 Alabama2Arizona3Arkansas2California16Colorado7Connecticut1District Of Columbia1Florida16Georgia6Hawaii1Idaho1Illinois10Indiana8Kansas3Kentucky1Louisiana4Maine1Maryland5Massachusetts4Michigan10Minnesota3Missouri5Montana1Nebraska3Nevada3New Hampshire2New Jersey13New York10North Carolina10North Dakota2Ohio5Oklahoma3Oregon2Pennsylvania12Puerto Rico3South Carolina2South Dakota1Tennessee7Texas24Utah1Virginia9Washington5West Virginia1Wisconsin6

Frequently Asked Questions

224ZE0001X questions

NPPES lists 242 registered providers with this taxonomy code (Occupational Therapy Assistant Environmental Modification).

Both. About 21% of these providers are registered as organizations and 79% as individuals.

This taxonomy code does not map to a Medicare specialty code in the current crosswalk.

It is a Level III - Area of Specialization code in the NUCC Health Care Provider Taxonomy set. As an area of specialization, it falls under the Occupational Therapy Assistant classification (parent code 224Z00000X).

Use the "Providers by state" directory on this page to open the list of occupational therapy assistant environmental modification providers registered in any U.S. state.

Source: National Uniform Claim Committee (NUCC) Health Care Provider Taxonomy code set, Version 25.1. Provider counts from NPPES. See nucc.org.