Is it plausible that doctors don't have lobbyists?
No, it is not.
There are DOCTORS who dedicate their lives to the care and treatment of their patients, with some time off for their families.
There are those “DOCTORS” who are at the head of the AMA who are dedicated lobbyists feathering their own nests, such as the “leaders’ of various unions do for themselves at the expense of their members.
It is the doctor in his office, examining an ailing patient who is not asked for his thoughts. That is where the catastrophe will center.