I recently read a prayer that I think is relevant to the church’s prayer topic of healing this month. This is the ‘Collect for St Luke the Evangelist’ which says:
“Almighty God, who called Luke the physician, whose praise is in the gospel, to be an evangelist and physician of the sould: may it please You, that by the wholesome medicines of the doctrine delivered by him, all the diseases of our souls may be healed: through the merits of Your Son Jesus Christ our Lord.”

Here is another prayer on healing I have read recently:
“Lord of all power, I hurt. My body isn’t functioning as it needs to function. I am in pain. But You already know all that. I’m not coming to tell You what is wrong, but to ask You to do what is right and best for me. As it fits Your plans, heal me; mend my body and my mind and grant me days of better health and renewed strength. As I wait, give me an extra measure of endurance, patience, and perseverance. When my energy to press forward is lacking, pour Your power into me like a fresh mountain stream flowing into a beautiful lake. Lord, I know You are able to heal; I know it with the utmost confidence. Grant me now the wisdom to understand Your timing and the courage to accept Your healing. In the name of Jesus. Amen.”

Jeremiah 17:14 TNIV talks of the Lord as healer:

I think Mark would also agree with this sentiment!