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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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Contact Us

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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OT Research Blog Post in Pediatrics Available!

May 29, 2015
Join the conversation on results from a pediatrics study! Check out the research summary, then use the discussion questions to talk with peers or reflect on your own practice. Feel free to leave a comment in the Comments section.

NBCOT Certification Examination Preparation

May 15, 2015
Candidates often ask, “How can I best prepare for the NBCOT® certification exam?” While there are a myriad of certification exam study guides on the market, not all study tools are created equally.

June 2015 Certification Exam Scoring Schedule

May 11, 2015
Important information about the exam scoring schedule for June 2015.

Introducing NBCOT's Research Blog Series

April 15, 2015
Check out NBCOT's new research blog series, intended to help you integrate evidence-based research into your everyday practice.

The NBCOT Navigator®—Coming in Spring 2015

February 21, 2015
NBCOT Navigator® is our continuing competency tool suite to help keep you at the top of your game. To take a virtual tour of the suite, check out the video on the NBCOT homepage.

In the Event of Prometric Testing Center Closures

February 20, 2015
Find out what to do in the event your Prometric Testing Center closes.

Terminology Related to Several Mental Health Disorders

January 21, 2015
Language & Terms Updated in OTR, COTA Certification Exams

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.