I have to go see a doctor today.
One night, in a shady restaurant, there were three doctors stuffing themselves with shark.
I want to be a doctor, but I hate touching people. Do you think that will be a problem?
Someone who works in medicine is a doctor.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.