The Centre for Interpersonal Relationships (https://www.cfir.ca/) has offices in Toronto and Ottawa. While it is a fee for service firm, it has been included b/c it specifically offers a Trauma & Dissociation Assessment Service (https://www.cfir.ca/TraumaDissociation.php):
...comprehensive psychological evaluations of symptoms associated with traumatic experiences for the purpose of providing or clarifying diagnoses including Acute Stress, Adjustment, Post-Traumatic Stress, complex PTSD or Dissociative Disorders, and making treatment recommendations to address your concerns and struggles.
CFIR is covered by most private extended insurance plans.