National Guild of Hypnotists

The National Guild of Hypnotists, a not-for-profit, educational corporation in the State of New Hampshire. Officially founded in Boston, Massachusetts in 1950 the Guild is a professional organization comprised of dedicated individuals committed to advancing the field of hypnotism.

Psychology Today

Greg is a listed as Psychology Today therapist. The Psychology Today magazine, first launched in 1967, gathers renowned psychologists, academics, psychiatrists and authors in the field to contribute their thoughts and ideas on what makes us tick.