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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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Examination Challenges

For more information, refer to the Exam Handbook. Candidates may challenge exams in the following ways:

1. Examination Administrative or Technical Challenge

  • The candidate MUST file a Center Problem Report immediately with the Testing Center Administrator (TCA) or before leaving the test center.
  • A “ticket” number and/or customer care card MUST be requested from the TCA.
  • The candidate MUST follow up with Prometric by email or phone within 24 hours after the incident occurred and provide the case summary and ticket number, if applicable.
  • The candidate MUST contact NBCOT by email at within 24 hours after the incident occurred and provide the ticket number and case summary. 
  • Examples of administrative or technical challenges include: computer screen freezing, power failure, approved accommodations are not available, physical disruption within the testing center, or the test is not available at the scheduled time.

*All exam scores are held until the examination challenge has been fully investigated and resolved.  As a result, the posting of pass/fail status to the NBCOT website and the release of exam results to a state board(s) may be delayed.  

2. Examination Content Challenge

  • Failing the examination alone is not sufficient grounds for a challenge.
  • The challenge MUST be submitted in writing and MUST specifically state the reason(s) for the challenge and why the challenge should be accepted.
  • The letter MUST be received by NBCOT within 14 days of receipt of the online examination pass/fail results.
  • The letter MUST be sent by traceable mail with signature confirmation to:
NBCOT Director, Credentialing Services
12 S. Summit Avenue, Suite 100
Gaithersburg, MD 20877
  • Within 21 days of receipt, NBCOT will provide a response.

Appealing a Challenge Decision

After a candidate receives a decision from NBCOT regarding a challenge, they have the right to appeal.  The appeal procedures are:

  • Within 21 days of the receipt of the challenge notice from NBCOT, the candidate may submit a letter of appeal.
  • The letter MUST outline the grounds for the appeal, including the reasons why the challenge should be recognized and accepted by NBCOT.
  • The letter MUST be sent by traceable mail to:
Attn: President and Chief Executive Officer
12 S. Summit Avenue, Suite 100
Gaithersburg, MD 20877