Joseph Addeo has been in private astrological practice since 2005, with a focus on the integration of psychological and predictive techniques. He holds Level IV Certification from NCGR-PAA (National Council for Geocosmic Research, Professional Astrologers Alliance), the highest level of that certification programme. He was elected to the Board of Directors of the New York Chapter of NCGR in 2001 and served through 2019. He is a regular guest speaker at NCGR conferences and lectures for astrological organisations throughout the New York metropolitan area and beyond. He has also written articles and columns for Astrotogo and The Ingress, and offers private astrology instruction alongside his consulting practice. Before astrology, he had a 20-year career as a professional operatic tenor.