Great excerpt on this topic from "House of God" by Samuel Shem, a not so fictional account of intern at Mass General Hospital. An M3 would be even lower than an intern
"While the straight shot down from the top of the medical hierarchy got the intern, the intern was at the
bottom of the other hierarchies only indirectly. In many tricky ways he had the opportunity to be abused
at any time by Private Doctors, House Administration, Nursing, Patients, Social Service, Telephone and
Beeper Operators, and Housekeeping. The latter made the beds and regulated the heat, cold, toilets, linen,
and general repairs. The interns were completely at their mercy.
The House medical hierarchy was a pyramid—a lot at the bottom and one at the top. Given the mentality
required to climb it, it was more like an ice cream cone—you had to lick your way up. From constant
application of tongue to next uppermost ass, those few toward the top were all tongue. A mapping of
each sensory cortex would show a homunculus with a mammoth tongue overlapping an enormous
portion of brain. The nice thing about the ice-cream cone was that from the bottom, you got a clear view
of the slurping going on. There they were, the Slurpers, greedy optimistic kids in an ice-cream parlor in
July, tonguing and tonguing and tonguing away. It was quite a sight."