Cool concept, but stop for a moment: does the pyschiatrist "take on" the new patient, motivated by the inability to pay his bills, or perhaps because the world is about to be destroyed? To me, it sounds similar to saying "I'm going to dismantle the bomb placed here in the lobby of my work place simply because it doesn't go with the decor!"
If he has the ability to help out in this situation, one would assume he would regardless of his financial situation. My advice: remove that motivator, or change it. The concept is great, and the logliine otherwise is excellent.
"Despondent over his dying wife, a suicidal psychiatrist reluctantly helps a new patient- a supercomputer on an earth-bound meteor- and must choose between the end of "his world" or the end of THE world!"
The motivation is legitimatized- he doesn't know if he can go on without here. Now, interject the conflict: if he doesn't, it's the end of the world. If he does, it'll probably result in his wife's death. It's the old "Sophie's Choice" syndrome.