Saint Raphael, the Healer.
From Chapter 12:11-17 of the Book of Tobit:
“I shall now tell you the whole truth and conceal nothing at all from you. I have already said to you, ‘A king’s secret should be kept secret, but one must declare the works of God with due honor.’ Now when you, Tobit, and Sarah prayed, it was I who presented the record of your prayer before the Glory of the Lord; and likewise whenever you used to bury the dead.
When you did not hesitate to get up and leave your dinner in order to go and bury that dead man, I was sent to put you to the test. At the same time, however, God sent me to heal you and your daughter-in-law Sarah. I am Raphael, one of the seven angels who stand and serve before the Glory of the Lord.”
Greatly shaken, the two of them fell prostrate in fear. But Raphael said to them: “Do not fear; peace be with you! Bless God now and forever.”