Keep in mind that this is not necessary

Weaponry: As with many of the other nano-reliant classes, you will find yourself relying very little upon weaponry. Instead you will want SWG Credits to team up with other players and let them do the dirty work. If you do decide on combat, however, then you will have two disciplines readily available to you: martial arts and pistols.

Naturally, a pistol would require some weaponry investment; however, keep in mind that this is not necessary and that you should not have to use a weapon if you choose not to.

Note: After consulting with Dr. Myria, one of the higher-level doctors, I have been informed that doctors can actually go solo fairly well, doing the dual-pistol thing. Sure--ammo will be expensive; however, you will be able to fire fast enough and do enough swg credits that, with your healing abilities, you may find yourself doing pretty well. While it is still not recommended, it is possible.

The problem, however, is that you will not have the nano pool that you would have if you were to choose a Nano.

Naturally, since when it really counts your healing will rely heavily upon your nano abilities, you will not make as good of a doctor as you would were you to choose the Nano.