Canada
No law in force in Canada requires a clinic to tell a caller they are speaking with an AI. Recording a call needs a clear notice and the reason, and a caller who continues has consented, unless a voiceprint is kept. Each province's health privacy law says who is responsible for patient information, under names such as custodian, trustee or organization, and how a vendor acting for the clinic is treated. Ontario's dental college asks dentists to tell people when they are interacting with AI.
Read the Canadian guide