Tarkoittaako "are paid entirely by commission" sitä että maksetaan palkaa vain toimenpiteistä

Kiinalaisystäväni isälle sattui aivotapahtuma.

We had a terrible doctor,
He had been putting Dad through a lot of tests,
And said that his father was very ill,
But there was nothing we could do,
Later we learned that the doctors in this hospital are paid entirely by commission.
So it was a terrible hospital,