Which saint, an evangelist, is the patron of physicians?

The evangelist who is the patron saint of physicians is Saint Luke.

Luke is traditionally identified as the author of the Gospel of Luke and the Acts of the Apostles. The New Testament refers to him as “the beloved physician” in the Letter to the Colossians, which is the basis for his longstanding association with medicine. Christian tradition also describes him as a companion of Paul.

Luke is one of the Four Evangelists, alongside Matthew, Mark, and John. His Gospel is especially known for its attention to the poor, outsiders, women, healing, and compassion. Tradition further credits him with being the first Christian icon painter, although that claim is devotional rather than established historical fact.

The other options are also evangelists, which makes this question easy to mix up. Luke’s distinctive association is medicine: he is patron of physicians, surgeons, artists, notaries, and several craft groups. His feast day is celebrated on October 18 in many Western churches.