Dr. Kallins was born in Arcadia, Greece. He graduated Medical School from the University of Athens with distinction. He then came to Chicago to pursue his Residency, working in Obstetrics and Gynecology, along with Surgery and Pathology at Little Company of Mary Hospital. Also, spending time at University of Illinois and taught Ob-Gyn there for one year. Dr. Kallins had a long and successful career as a medical professional, practicing from 1959 until his retirement in 1997. He was an original founder of the Hellenic American Medical Society, and has also been a pillar in the Greek American Community of Southern California.

Dr. Kallins has also been an ardent supporter of the Greek Orthodox Metropolis, Archdiocese and Ecumenical Patriarchate. As an Archon in the Order of Saint Andrew the Apostle, Dr. Kallins has served as a Regional Archon Commander for the Metropolis, coordinating several events to heighten the awareness of the struggle for religious freedom by our Mother Church. He has also served on the Metropolis and Archdiocesan Councils, and as the Supreme President of the Pan-Arcadian Federation. The ministry of Saint Nicholas Ranch and Retreat Center was especially blessed by the generosity of the Kallins family.