Alternative or natural medicines or therapies, like oriental medicines, acupuncture, homeopathy, quiropractice or osteopathy, but also nutritional therapies, Reiki, hypnotherapy to name just a few, are NOT regularised in Spain, unless practiced by medical professionals in a medical facility.
This doesn´t mean that as patient/client you are completely unprotected, there are associations, of which Cofenat is the largest and the only one involved in talks with the government and the Seguridad Social about the regularisation of said therapies and also involved in arranging for ´third party´ insurance for its members, minimum requisites with regards to formation etc.
More info on the Cofenat website.
Report from the Government website about the legal situation of alternative/natural therapies in Spain and other western countries, in Spanish.