What is the alternative complementary practicioner who believes that a life energy flows through every living person in an invsible system of meridians?

The alternative complementary practitioner you are referring to is likely an acupuncturist or a practitioner of traditional Chinese medicine (TCM). They believe in the concept of "qi" (or "chi"), which is the life energy that flows through the body along pathways called meridians. By balancing this energy, they aim to promote healing and overall well-being. Techniques such as acupuncture, herbal medicine, and qigong are often used to restore harmony to the body's energy system.