I know there are some huge culture differences from surgeons, doctors, and nurses so I don't mean to conflate them. But I remember hearing that longer nurse shifts had better patient outcomes because so much was lost in handoffs between shifts. There was a study formalizing shift handoffs and patient outcomes improved significantly (I think it did beat out longer shifts, but I'm not sure).

I've been to specialists offices who had a rotating practice where you saw whoever was in that day. You still usually had a primary person you saw for scheduled appointments. I still think patients prefer dealing with a single person and am sure things get lost in doctor's notes or even if you make a phone call to the original doctor.

Medical training seems to promote normalizing very long work ours and sleep deprivation. I know I've heard about law suits trying to point out the egregiousness of it. Long shifts and being on call 24/7 definitely simplifies staffing. I was in a tech support department that went from 40hr support to 24/7 and it was significantly more challenging to manage.

I hope we can improve things because it seems almost inhumane in how we treat medical professionals as well as patients.