Occultist n. : An adherent of occultism.

Example:
What's the difference between a mystic and an Occultist as in the statement?

Taxonomy
occult, magician, founder, witch, occultist, astrologer, alchemist, occult science, List of occult writers, sorceress, List of occultists, occultism, The Witch of Endor, Unknown Philosopher, free encyclopedia, wizard, magical, Hermetic Order of the Golden Dawn.

Defination from the web:
occultists and mystics. ... Robert Anton Wilson, occultist and author. Frances Yates. Silas Ciarán, occult author, artist, and musician. Rev.Dr. Donald Reed Marshall Jr., Master Occultist, Magister Templi Great White Brotherhood, Doctor of Divinity, Ordained Minister, ...