Well our docs make their own announcements from their own offices and most of them speak clearly so that's fine. However 2 of them are part-time now towards retirement and they've been 'trying out' various docs who appear for 6 months then disappear and some of them you have difficulty telling what they are saying when you are in there, let alone over the intercom!
The announcement is always eg 'Mrs Joan Bloggs to Dr Smith in Consulting Room 2please, Mrs Joan Bloggs to Room 2' If nothing happens they repeat that and if nothing happens still they either come out to the waiting room and call again or ring through and the receptionist bellows LOL
What good any of that does if you do happen to be profoundly deaf, I have absolutely no idea.
I mean I worked with a girl who was married to a chap whose dad was Polish. The nearest you could get bearing in mind the lack of vowels, was, honestly 'Crazy chick' whereas their surname was actually pronounced 'Cry check'. She used to make appointments for people at work and ask to be called back when Mr Client wasn't available, so Mr Client would ring back and ask for 'Sue, Errrr ....' LOL