For myself, I say absolutely - and I can say this because I know that my husband will support me in whatever career decisions I make, and I know my own mind well enough to be able to make those decisions.
That said, being married does (and should, I suppose - if it's a committed marriage) change the way you might approach some of these decisions. For instance, I don't see myself randomly taking a job in Qatar or something like that.
If your career (chosen, intended etc.) requires more than the normal amount of commitment/flexibility/self-centeredness, then it's a good idea to talk that over with a prospective partner - maybe you'll want to wait until after you've finished med school to get married, or after you've done your back-packing across Europe thing - or maybe, if you're lucky, your Person will have a career (chosen, intended etc) that either matches yours for demands or is so flexible it doesn't matter.