Actually you can hack the medic level in the same manner using cheat engine, All the perk level figures address are group together despite being randomly generated, if you know the address of say the commando damage and support damage, search for your medic figure and take an educated guess, the medic heal address will be very near the addresses for the other figures, if not wedged in between two other perk figures (I just search for two other figures and threw a dart at what I believed was the medic heal)
Edit; (if giving this link is frowned upon, I'll happily remove it) forum.cheatengine.org/viewtopic.php?t=427693&sid=532cec3b1e9861e408ef7f22db8469fe , There's a rather detailed guide to using cheat engine for editing the perks.
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