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Serving the public interest by advancing client care and professional practice through evidence-based certification standards and the validation of knowledge essential for effective practice in occupational therapy.


Certified occupational therapy professionals providing effective evidence-based services across all areas of practice worldwide.

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The National Board for Certification in Occupational Therapy, Inc. (NBCOT®)

12 South Summit Avenue
Suite 100
Gaithersburg, MD 20877
(301) 990-7979

Email NBCOT at

Business Hours
Monday-Thursday: 9 am – 5 pm, Lunch: 12 pm – 12:45 pm

Friday: 9 am – 4 pm, Lunch: 12 pm – 1 pm


OTR® & COTA® Credential Verification

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Educated. Tested. Certified.

The National Board for Certification in Occupational Therapy, Inc. (NBCOT®) is a not-for-profit credentialing agency that provides certification for the occupational therapy profession. NBCOT also works with state regulatory authorities and employers, providing information on credentials, professional conduct, and regulatory and certification renewal issues. Above all else, NBCOT’s mission is to serve the public interest. NBCOT provides a world-class standard for certification of occupational therapy practitioners. NBCOT develops, administers, and continually reviews its certification process based on current and valid standards that provide reliable indicators of competence of the practice for occupational therapy.


NBCOT is governed by a Board of Directors comprised of Occupational Therapists Registered, Certified Occupational Therapy Assistants, and Public Members. The Board of Directors is responsible for establishing the strategic vision and management oversight for the organization.

Located in Gaithersburg, Maryland, NBCOT’s certification programs are nationally and internationally accredited by the National Commission for Certifying Agencies (NCCA) and the American National Standards Institute (ANSI).

Occupational Therapist Registered (OTR®) and Certified Occupational Therapy Assistant (COTA®) are healthcare professionals. They are committed to providing safe and effective occupational therapy services to children, adults, the elderly, and communities. NBCOT has certified over 214,000 OTR and COTA certificants. NBCOT initial certification is a requisite for licensure in all 50 U.S. states and the District of Columbia.

To be eligible for certification, the OTR or COTA candidate must meet specific eligibility requirements and to maintain certification, they must satisfy the professional development requirement and agree to abide by our Practice Standards/Code of Conduct.  

If you are receiving occupational therapy services and want to verify that you are receiving services from a nationally certified occupational therapist or occupational therapy assistant, please use our online verification tool.

If you had an incident with a certified occupational therapist or occupational therapy assistant, file a complaint online.