Complex sentence: He served three terms as Chapter President of the SoCal Chapter of the Mystery Writers of America and is a member of Sisters in Crime, the Horror Writers Association, the Dracula Society, and the Transylvanian Society of Dracula.
Split into simpler sentences: He served three terms as chapter president of the Southern California chapter of the Mystery Writers of America. He is a member of Sisters in Crime, the Horror Writers Association, the Dracula Society, and the Transylvanian Society of Dracula.