Parawellness has potential in identifiying parasites. The doctor there analyzes the sample himself. In my sample they found protozoa 'microsopic' parasites, not the big ones though but it showed something when other lab stool tests didn't show anything.
There is also Dr. Simon Yu in St. Louis who seems expensive but looks like he may be one of the few doctors in the US at least that is tuned into these infections.
Also it could depend on the doctor but it might be better not to tell them.