You can ask, but what actually dictates the value add is the market.
As of right now, there are a lot of instances where the supply and demand indicate that facilities should raise compensation, but very often (>50%) when I inquire, facilities are unwilling to raise compensation for various regulatory reasons, which essentially translate to the existing salary must fit into a salary framework dictated by old salary figures that didn't change or "industry surveys" that aren't well updated. This then of course causes a worse shortage. Academic facilities are especially bad. The prevailing practice is offering low 200s to a new grad/fellowship grad (with potential leadership roles), where the market value is > 300k. It's not *possible* to pay you 350k when the CHAIR of the DEPARTMENT (as a state employee, etc) only gets paid 350k on the state salary line. He may have lots of consulting gigs and so forth that bump his final income way up, but this fact doesn't help the job seeker at all. Even if the chair WANTED to bump people's salary he's constrained.
Here's the biggest problem of a centrally managed economy: underlying invariably is that facilities can't afford to bring their salary up because their revenue isn't increasing much, as salary-lined jobs are pegged to Medicaid, etc. If you raise all staff psychiatrist salaries to market you'd blow the budget. LOL. This is the foundational reality in this industry, which EVERY SINGLE RESIDENT should understand because this has huge huge implications on everything they do. There are hard caps on staff psychiatrists at a facility that takes insurance. The whole NP supervision, etc. etc. is all window dressing. You can't replace MDs with NPs ad infinitum or else they would've done that already.
MGMA surveys are used to suppress physician salaries. They are used as you allude to, for dictating what is the horribly termed "Fair Market Value." Some one please step in and help me on who adds the teeth to this Scat on FMV, I can't recall exactly, little rusty on this detail. I think it is being a non-profit that dictates incomes can't be in excess of certain FMV indices. Thus, low inertia to propel salaries.
I used to believe the lie that hospitals are scrapping by and can't afford anything they are broke, have no choice but to hire ARNPs to simply survive and carry out their mission. Scat. Pure scat and lies. The things I've seen over the years in connection to different health systems, they are doing just fine. Money is wasted on Admin staff, and admin salaries. Money is wasted on lawyers for admin screw ups. Money is wasted on promoting the wrong people to middle management who propagate distressing work environments that fuel further lawsuits. Money is wasted on Admin projects buying an acquiring buildings, practices, whole urgent care networks, etc, etc, that aren't in line with their true mission, but believed to make them more profitable. The culmination of all these endeavors that are in opposition to what a non-profit driven mission should be has shaped my view that these organizations, should all be stripped of their non-profit status. Worse, on top of this, are the estate gifts that fuel these profit systems with another surge. Meanwhile small entities don't get the non-profit tax benefits that these for-profit-in-behavior entities get, compounded by their higher rates from insurance - makes competition so much difficult. Small entities are practically forced into cash only.
In summary, there are ways for non-profits to re-align, and peg their payment structure higher for physicians, which would be more favorable to recruitment and have an emphasis on physician over mid levels. But they don't want to.
The lie isn't that they can't, the lie is to you and us, that they just don't want to and want to place dollars in other buckets.
If we want change, we have to take back health care in the US. Physicians have to be the admins. Not because we are burned out and fleeing clinical medicine and are willing to drink the koolaid of the bureaucracy, but because we still have fight in us and want to shape an entity. [man, all this almost sounds like a political ad to 'bring out the vote'] To change the hiring practices, and pay structure, and mid management roles. Other aspects as the formation of physicians specific groups, working from the ground up.