Re: nodule--Tumor/Surgical department, not Endo?
First, your nodule is so small, I wouldn't be worrying so much about it at this point.
Second, it's totally dependent on the endo. Some, like mine, have an ultrasound machine in the office, and do their own fna's and ultrasounds. Others send you to a radiologist for that. Mine is very into thyroid, but others spend most of their time working with diabetes patients.
In my case, to get an appt. with an endo. was 4-5 months. So I went to an ENT. An ENT (ontorongologist) is a head neck surgeon, and does thyroid surgery. The ENT evaluated the nodule and did the fna.
Then, since I hated that guy, I went to a thyroid specialist surgeon (you'd have to go to a teaching hospital for this, and live in an area where you have it) to actually have my surgery, and he was the best.
So, an ENT is a good route for following a nodule, an Endo. can also be involved, but they are not the ones that do the surgery.