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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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News - 2014

Annual Magazine Just Published!

December 11, 2014
Certification Matters. Delve inside to learn about updates in occupational therapy, from telehealth to evidence-based practice in the age of the Affordable Care Act.

December 2014 NBCOT Office Closure Schedule

December 5, 2014
NBCOT will be closed from December 23, 2014 - January 1, 2015. The office will reopen for business on Friday, January 2, 2015.

Castle Worldwide Testing Site Closures and Delays

November 14, 2014
Please be advised that due to scheduled system maintenance on Castle Worldwide's website, practice tests will not be administered or available for purchase for several hours on Wednesday, November 19, 2014, beginning at approximately 7 pm EST.

NBCOT® Sponsors Its First International Occupational Therapy Regulatory Event

October 7, 2014
The National Board for Certification in Occupational Therapy, Inc. (NBCOT®) recently sponsored a first-of-its-kind international occupational therapy regulatory event in the UK.

November 2014 NBCOT Office Closure Schedule

October 7, 2014
NBCOT will be closed on Thursday, November 27 and Friday, November 28, 2014. The office will reopen for business on Monday, December 1, 2014.

NBCOT Announces Updates to the OTR and COTA Entry-level Self-assessments

August 7, 2014
Find out about the changes that have been made to the OTR and COTA Self-assessment tools!

NBCOT Provides Support to AOTF for Occupational Therapy Research

July 23, 2014
NBCOT provides gift of $250,000 to the American Occupational Therapy Foundation (AOTF), in support of the AOTF Intervention Research Grant Program.

2014 NBCOT Endowed Scholarship Recipients

July 23, 2014
NBCOT and the American Occupational Therapy Foundation (AOTF) are pleased to announce this year's recipients of the NBCOT Endowed Scholarship.

Maryland Board of Occupational Therapy Practice Recognizes NBCOT® Maintenance of Certification

April 7, 2014
OTR, COTA certificants in Maryland can opt to have their current NBCOT certification status meet state's continued competency standards.

NBCOT Featured in ICE Publication

April 2, 2014
NBCOT's Margaret Bent, PhD, OTR and Shaun Conway, OTR featured in Institute for Credentialing Excellence (ICE) Digest, detailing extensive mystery shopping process used to evaluate certification exam experience.