@Linkat,
My doctors have always done what yours does, Linkat - go out for the sake of modesty, although i've never figured out WHY since they've seen every part of you already... and if my doctor ever took a personal phone call/text, or kept popping in and out, or tried that group thing, he/she'd be toast.
They're not making enough money as it is? 15 minute or less visits at how much a pop? I'm sorry, don't try to make more by having 10 - 20 patients together for 1/2 hour... how thorough do you think the doc can be with each patient? What if you have more than one particular medical complaint? What if you don't want to discuss your pregnancy hemorrhoid in front of 14 other women? No, that wouldn't be for me.
Edit: oh yeah, and I don't agree that administrators, family, friends, fellow teachers should be interrupting the teaching whatsoever. There's a lot less being taught nowadays anyway what with all these professional days that we don't need even less due to interruptions. I think it's disrespectful to the students and the parents.
Is there something wrong with the way it's always been done?
Would it also be okay to interrupt business meetings that way? What if everyone was allowed texts/calls during their working hours? That's ridiculous. I know lots of people do take personal calls at work, but if they job situation permits it, no problem, but if, for example, nurses/doctors in the OR suddenly started taking calls, there'd be chaos.