In the event other specialists share information, it must firstly be authorized in writing by you. In order to practice must adhere to strict ethical laws and principles. Links are below.
Canadian Counselling and Psychotherapy Association Code of Ethics and Standards of Practice
https://nscct.ca/wp-content/uploads/2018/10/CodeofEthics_en_new.pdf
https://nscct.ca/wp-content/uploads/2018/10/StandardsOfPractice_en_June2015.pdf