Alexandra Karacostas is a professional astrologer based in northern California. With decades of experience as a consultant, she offers practical wisdom, insight and compassion to help people successfully navigate their lives. An avid student of astrology since 1975, she has been practicing professionally since 1984. Alexandra teaches and lectures nationally and abroad and serves an international clientele. In 1989 she co-founded Syn-Sig, an NCGR Special Interest Relationship Group.

She has served on the board of directors of the Organization for Professional Astrology (OPA) since 2007, as President between 2010-2014. Alexandra is on the OPA faculty, serving as a certified Peer Group and Consulting Skills facilitator. She has been published in various astrological magazines, was a regular columnist for The Mountain Astrologer between 2010-2019, and has written chapters for OPA’s books, The Professional Astrologer and the new Essential Astrology coming out soon. She has been a co-editor for ISAR’s Journal, for OPA’s Career Astrologer magazine as well as The Mountain Astrologer. Alexandra also leads sacred site tours in her beloved Greece.