In Germany there is a profession called "HEILPRAKTIKER",
like a medice doctor but for natural medicine and on a
private qualification
In Polish that would be a “Znachor” but that has a negative connotation to it more like a voodoo doctor or witch doctor, a shaman in English, the word you are looking for is “Zielarz (Herbalist)” or “Bioterapeuta (Biotherapist)”in Polish. I have respect towards herbal medicine but bioenergoterapia, bioterapia, pranoterapia, czakroterapia, mesmeryzm or any other form of are nothing more than shamanism in modern edition if you ask me, a pseudo medicine.