Only if you're playing a Kalashtar (or some other +wis +cha race), and gave yourself 20 wisdom and 16 charisma, which leaves you with exactly one point to spend on other stats, leaving you with the unenviable defense array of 10/10/17. Any race without a wisdom and charisma bonus need not even apply. Hardly broken.
It's pretty darn close to broken.
At level one it can be: 2+cha+wis+ = 2+2+4 = 8 hp restored and the PC can be well balanced in other areas. 18 wisdom and 14 charisma can be easily achieved via many races.
And 8 hp is easily more than a healing surge at level 1 for most PCs.
As the PCs go up levels, not only will Wis increase (+5 in 26 levels plus a minimum of +1 for Cha in 20 levels), but feats and items (gloves of the healer is 3.5 and then later on, 7 more from one item) and paragon/epic abilities can keep increasing this. It only needs to go up by about 1 point per level to stay at a free healing surge level and even if it doesn't, it's still real nice (considering the -2 to Defenses for a round+ aspect).