I don't know anything about worms, but I'm very certain that I could choose a doctor that would recommend treatment or one that would not, depending on what I've already decided I want.
Further, if you do pick your doctor based on the fact that they will give you the treatment you want, at least someone other than you knows that you are taking medications with potentially bad side effects.
Isn’t this how the opioid epidemic started? Going to doctors that would prescribe you OxyContin because you hurt your finger? Or back? Or knee? Or ego?
If you want pain meds, I'm sure it's easy at any of those "pain management clinics" I see advertised.
If you call a few doctors and ask "Does your practice handle worms? I'm worried I might have worms," you'll have at least some of them say "absolutely, all the time, come right in".
If they want a happy customer and they know your expectations and they know the risk of dewormer is low, then they'll probably go along with it to make you a recurring ~~customer~~ patient.
You might not even know you've accidentally guided the doctor in that direction.