I’m always bothered when Christians speak of God “healing” someone through surgery, or when they call something a “miracle” that does not clearly bear the marks of supernatural intervention. While we should ultimately thank God for all good things, if a surgeon fixes your body, then it was not a divine healing–it was a medical healing.
We should thank God for giving the doctors the knowledge and wisdom to fix our body, but to attribute the healing to divine intervention cheapens the Biblical concepts of divine healing and miracles. When God performs a healing, surgeries are not necessary. When God does a miracle, His direct involvement will be obvious because the outcome will defy a naturalistic explanation. Did your headache go away? Great, thank God for it. But if you popped an Aspirin at the same time you prayed for the headache to go away, you should probably be buying shares in pharmaceutical companies rather than telling people God healed your headache.