D
I’ll claim 
.
Interpretation
This is sentence from a new character we haven’t seen so far. He looks serious so I’ll call him ‘serious guy’ as a moniker until we find out what his name is.
He buts in the conversation and says:
教授←『は』the topic is his sentence is a professor/professors in general as indicated by the 『は』. So about the professor/professors, what does he have to say?
患者(patient)←の→家族(family) = the patient’s family + から(from) = from the patient’s family. What from the patient family? Let’s find out.
100万 = 1000000 + 程 = up to 1 million I believe as ほど【程】probably acts as an upper limit here.
After that we have 受け(popularity, favor) and then 取っている in the progressive. 取る can have various meanings but it’s most common meaning to pick up, to earn.
So to sum up, I think he says that professors earn up to a million yen as a “gift, favor” from the patient’s family/families.