From The Book of Common Prayer:
Almighty God, who didst inspire thy servant Luke the physician to set forth in the Gospel the love and healing power of thy Son: Graciously continue in thy Church the like love and power to heal, to the praise and glory of thy Name; through the same thy Son Jesus Christ our Lord, who liveth and reigneth with thee, in the unity of thy Holy Spirit, one God, now and for ever. Amen.
Sanctify, O Lord, those whom you have called to the study and practice of the arts of healing, and to the prevention of disease and pain. Strengthen them by your life-giving Spirit, that by their ministries the health of the community may be promoted and your creation glorified; through Jesus Christ our Lord. Amen.