[Bartweiss]

I'm curious how this varies by speciality.

It's pretty obvious why you'd want this space. Constant on-call status is rough enough for technical roles, I can't imagine how much higher the burden would be when people's health is at stake and 'false alarms' are human fears instead of automated notices. Long hours and high emotional burdens scream for boundaries. But... I've also seen doctors who seem to consider this standard practice. Not that they're obliged to respond immediately, but they even offer phone numbers unprompted. (I hope for their sake they have a different number for those calls.)

What stands out to me is that this article is about Crohn's, a probably lifelong condition for which a doctor might see a huge number of patients. The doctors I've seen giving out personal phone numbers are oncologists and similar, who see people for long but finite stretches and have relatively low patient counts. (And, of course, are dealing with a disease where "is this serious?" is not-uncommonly met with "go to the ER immediately".)

I'm not sure what your specialty is, but I'd be really interested to know whether this is just a per-doctor preference or has broad patterns between fields.