The reality is this varies highly not just by individual doctor but by doctor group.
And whether or not they’re willing to consult a specialist while you’re in a hospital.
Spoiler: they lose money if they do this because only so much is available to be paid out for each patient. Second spoiler: sometimes seeing a specialist while hospitalized means getting transferred 100+ miles away to another hospital because that hospital doesn’t have any of that specialist available. Third spoiler: Level 1 hospitals are few and far between (they have everything).