The current gear you have, if it is for DPS, is NOT effcient for healing. While capable, not nearly what you will need to heal well. Combat medic healing I find is VERY situational, and takes a fair amount of judgement and reactions, instead of just spamming slow realease med-pack like a Scoundrel, or LOLSALVATION like a Sage. It is very fun and active healing. ^_^
Crit chance: Crit chance for Combat Medic is much more important than it is for Scoundrel or Sage. Not only does it help in keeping the alacrity buff up 100% of the time, you also have lower base healing than sage, and dont have all the HoTs of the Scoundrel. Crit heals can make the difference of an alive or dead tank for a CM healer in many situations.
Now, that doesn't mean stack a ton of crit, though. Since the massive nerf to crit scaling, it will not be helpful to stack it a lot, but you do need some crit. I currently sit around 210 crit rating, and with the crit from your talents, you should sit around 30%, which is fine.
Alacrity: This used to be irrelevant because of energy management issues, but with the changes to alacrity and the commando resource adjustment, you can actually benefit well from some. Since you get the bonus in alacrity from the proc in the Medic tree, and the 2% in the Assault tree, you don't have to stack a huge amount of this. I am pretty sure I am sitting around 6% before the alacrity proc, which puts my Med Probe at around 1.78 seconds (with the alacrity proc activated). As long as you have at least 10% total, which includes the proc, you should be fine.
Surge: I find that having my Surge around 400-450 is a good spot. This puts you at around 72-73% if I remember correctly, which is sufficient for healing hard mode OPS atm.
Aim/Power: Aim/Power is your friend. Just keep stacking the hell out of these where you can when your other stats are at good spots (mentioned above).
Augments: Aim. Nuff said.
I dont have time right now to go through rotational abilities or anything atm, but can update at a later time. Hope this helps!