I am actually curious, how can a doctor make himself more highly valued and indispensible? (Meaning if he say he wants to quit, people will actually try their best to keep him- either through higher pay or other perks)

From the way I see it, it seems that family medicine (GP/FPS) are very replaceable. (Not that they are useless/unimportant, just that it's very easy to find someone to replace them)-maybe it's just the sheer volume of GP/FP nowadays.

Not sure if specialist are the same? I personally think GM and Geri or even gs is pretty much the same. Not sure about the more specialized fields, esp the procedural ones (like neurosurgery/cardio thoracic surgery/spine surgery, or like cardio interventionist) are more indispensable (as there are fewer trainees each year)

And for those who already entered into a generic field (like FM/AIM), how can they make themselves more valuable or indispensable to the institution (Can be public/private) so that they can't be replaced so easily ...