Go to the hospital to see a doctor, no money to see a doctor, no money to see a doctor. Is this because doctors don't talk about medical ethics? ?

No, at least not completely. Hospitals are not charities. Doctors have to eat, get paid and need funds to keep the hospital running. If they are sick and don't want to give money, the hospital can't survive. So it is not the responsibility of the hospital, but the responsibility of the whole society.