Hypnosis as a practice is not regulated in the state of California, so it pays to be very careful when selecting a hypnotherapist. Certified lay hypnotherapist are individuals who have completed 200 hours or more of training in hypnosis, but who don't have additional professional health care training. Licensed health care professionals who practice hypnotherapy such as doctors, dentists, psychologist, and licensed marriage family therapist such as myself are trained in hypnosis in addition to their university training.