Going back to 2nd Edition, the players didn't like being stuck as a Healer, via Cleric class or otherwise.
So 3rd has lots of options ... some massively better than others.
I think the more recent idea, of healers being O.K. or even sweet,
comes from MMOs. I have no personal experience with them, none.
Sangehirn 3 or 5 could be all you need.
I don't like the power choice restrictions, but that's just me.
If the DM doesn't like the Mind's Eye Substitute powers,
Sange adds lots of powers an Ardent might have trouble getting otherwise.
Ardent 10 with Dominant Ideal is quite the dish.
PsyWar healer ??
No.
Or not without a recharge set-up, and lots of other gimpage.
Dragon #349 has the Psiotheurgist feat(s).
One of them links (healing) subtype Psi with Magic.
You want a +14 to your ML right ?!
Just need an CL/2 race, and a few feats.