Meditate 3 (Source)

Bottom line...

Meditation at the 4th box will heal, on average, 20 wounds per second. That is increased to about 30 wounds per second when you master TK. (I say "on average" because it heals a random number each second).

As a master TK, when I die without being cloned and take that 100 wound hit to my HAM, it takes probably around 20 seconds to heal it all off. All I have to do is sit down and meditate. No wound packs to use up, no waiting for my wound healing timer, no using up the mind pool. When it comes to healing ourselves, TKAs have doctors beat. Oh, and we can heal our mind wounds unlike a doctor.

Now, medical skills are still important even if you master meditation. You still need medic to heal damage, and you need to be a doctor if you want buffs, state heals, fire cures, etc. So being a TK doesn't mean medical skills are redundant. You just never, ever need to worry about wound healing again.

Oh, we can also meditate off bleeds, disease, and poison, but that can take a little while and we're better off getting a heal from a doc if we can.

yes once you hit meditative master you will be able to heal all wounds. It basically heals one type of wound per tick so first take it may heal 20 mind points next tick it may heal 20 strength points. It always seems to do Action and Health last.

Also with meditate you can heal most afflictions as well including poison, disease and bleeds. Stun, Intimidate and Dizzy are a few affects that will keep you from being able to use meditate so you have to wait for those to wear off first.

At master you can also cure yourself of even the worst combat medic disease or poison in well under 12 seconds.