Loremaster has heal as a class skill, but you can't get it before level 8. With a sufficiently high Int you could get Graft Flesh as a secret and start on fleshwarper at level 9. (Wizard 7/Loremaster 3/Fleshwarper 10 is probably more practical.)
One possibility for heal is Draconic Heritage (CArc). A gold dragon heritage gets you heal a class skill. If you're not a sorcerer you need Dragontouched (DragonMagic) as well.
So for a human you could go Wizard 3/Master Specialist 2 (CMag)/Wizard 2/Fleshwarper
1. Dragontouched, Draconic Heritage
3. Spell Focus
6. (Any)
7. Graft Flesh (item creation feat - wizard bonus feat)