God heals through the human instrument He has gifted. I thought this was understood without being said.
“to another gifts of healing by the one Spirit” -1 Cor 12:9
If you are speaking of Doctors and medicine, I have no argument with you there, just like I won’t argue with a person who had cancer or some other ailment, was prayed for, or attended a mass somewhere, and found that his cancer was cured. There are many documented healings from both catholic or protestant sources where God has acted in a sovereign manner where medicine had failed or at least where God has chosen to operate beyond medicine beyond the need of a human conduit(other than the praying minister and/or deacons).