This information is intended for individuals who were registered with the College in the past and wish to return to practice.

If you wish to return to the College after you have resigned, retired or your certificate of registration was suspended or revoked, you will be required to submit a new application.  In addition, you must meet the registration requirements in effect at the time of your new application.

Getting Started

The College sends all communications by email, many of which are automated. Before you begin your application with the College there are two important steps you must take:
  1. Add the College’s domain ( to your email service’s safe senders list.
  2. Make sure your email provider doesn't block any automated College emails or send them to your junk/spam/promotions folder versus your inbox.
Review the information below about the registration requirements and required documents to ensure that your application is complete and you have arranged for all documents to be sent to the College.

The College operates a primarily paperless organization. Please send all documents electronically to​.

For any questions, please email​

Response Timelines: Registration staff will respond to your inquiry (received by email or phone) within five (5) business days. We appreciate your patience.

This table outlines the documents/information you will be required to submit to be registered with the College again.


Reason for leaving the College Time lapsed since you graduated or last practised as a Dietitian Next Steps
Resignation/Retirement  1-3 years
  • Complete the Application form: Return to Practice and email it along with any supporting documents to Once your application form is received you will be instructed on how to pay all required fees.

  • If you have not previously written the Canadian Dietetic Registration Examination (CDRE), you will be required to write it after you re-apply. The CDRE is a non-exemptible requirement as outlined in the Registration Regulation. For more information about the CDRE click here
Resignation/Retirement  3-9 years Upon successful completion of the CDRE or acceptance of the continuing education/ continuing competence activities you will be deemed to have current dietetic knowledge and skill and will be registered with the College.
Resignation/Retirement 10 or more years As per Policy 3-30 Assessing Currency for Applicants, if the gap since the applicant’s graduation or last practice has been 10 years or more, the applicant must complete the College's Prior Learning Assessment and Recognition Process.
Certificate Suspended   In order for the College to lift the suspension you must:  
Contact the Registration Program Analyst, Heena Vyas at for any questions about lifting suspension.
Certificate Revoked Less than 2 years since previous membership revoked Complete the Application form for Reinstatement.
Certificate Revoked More than 2 years since last registered with the College Contact the Registration Program Analyst, Heena Vyas at for information.

For members returning to practice after retiring, resigning or certificate of registration revoked. Once the College has received all of the required documents, your application will be assessed to determine whether you meet the requirements for registration. See Registration Requirements for detailed information about each of the requirements. 

Email your completed application form and all supporting documents to

Your application ID and temporary password

When your application is received, the College will send a confirmation email which will include your application ID, a temporary password, and instructions on how to pay all required fees.

Monitor the progress of your application online

Use your ID and password to access the CDO Applicant dashboard to monitor the progress of your application. On the dashboard, you will see:

  • the status of your application;
  • a list indicating which documents have been received; and
  • a list showing which documents are still outstanding to complete your application.

When we have received all required documents and fees, we will proceed with the review of your application.

Your application status and documents received are updated every business day.

Completing the registration process can take up to ten business days from the time that the College receives all of the required documents, but this is a guideline only. It is the applicant’s responsibility to ensure the timely delivery of all documentation and other information requested by the College.

Answering “yes” to certain questions on the declaration means the College may require additional information to support your application. This information will be reviewed by the College’s Registrar and, in some cases will be referred to the Registration Committee, which will extend the time it takes to process your application.

Factors that may delay the processing of your application include:

  • Failing to complete and sign all sections of the application form;
  • Information about your conduct or health that may require further review and follow-up;
  • Failing to produce other documents requested by the College.

Only members of the College can practise as a dietitian in Ontario using the titles “dietitian,” “Registered dietitian (RD),” “Dietetiste (Dt.P),” or “Dietetiste Professional (Dt.P).”

It is illegal for anyone to use any of these titles in Ontario without a valid certificate of registration issued by the College.

Your status as an RD informs the public that all individuals who identify themselves as dietitians have the knowledge, skill and judgment required to provide safe and ethical dietetics services.