I’ve noticed that some SLPs and audiologists refer to themselves as “Doctor” or “Dr.” whereas others do not. Is there a difference?

Only individuals authorized by ACSLPA can use the title “doctor” or “Dr.” when providing a health service. SLPs and audiologists who are authorized to use these titles hold either a clinical doctorate or a PhD in speech-language pathology or audiology.

Regulated members of ACSLPA with doctoral degrees can use the title “doctor” or “Dr.”  in teaching, research, or administration without prior authorization.