Every hospital has its own terminology so it might be. Otherwise check with the information desk when you go in to your appointment and they should be able to direct you to the right person.

You don't sound demanding at all Traveller. All your concerns are completely reasonable and you're going about trying to have them answered in a sensible respectful way. The public hospital system can be terrible for continuity of care. Just the nature of rostering and the volume of staff and patients. Maybe suggest to the doctor you see Monday that you would like to feel one doctor is coordinating your DS care and communicating consistently with you. If the same consultant can't see you every time often they'll nominate one of the registrars to be your main point of call as they're often on-site the most consistently if that makes sense.