Perhaps one of the biggest issues that Surgeons currently face is that their patients are often unaware of the fact that they need to stay still to be healed or that they're being healed at all; despite telling them clearly through VoIP that they need to stand still several times.
Players need to be aware that they must be stood still when being healed, and indeed that they're being healed at all. One way to do this could be to give the player a notice when being healed by a Surgeon. The message could be placed at the lower centre of the screen. A white cross would occupy the entirety of the left of the message, to the right of this cross the message would follow, something along the lines of:
"You're being healed.
Please stand still."
The message would need to be big enough so that the player could see it at the corner of their eye but not so big of course that it obscures their vision.
Thank you for your time!