Through the Apostle James, the Lord has commanded, are there any who are sick among you, let them send for the priests of the Church and let the priest pray over them anointing them with oil, and the prayer of faith will save the sick person. – from the Rite of Anointing
At any time you may request the sacrament of the sick for yourself or someone you love.
You can do this by calling the parish office and leaving a message for the parish priest.