I wonder if this has been tested in court before. If I'm a licensed medical doctor and then I post under a pseudonym online on things medical-related (while not

I wonder if this has been tested in court before. If I'm a licensed medical doctor and then I post under a pseudonym online on things medical-related (while not claiming to be a doctor or claiming to know anything about what I'm talking about), would it be possible to be sued for medical malpractice for that advice? That seems questionable.