I found the article you posted quite interesting - however, I have to agree with Turkish girl. A single aspect without anything to connect it with can indicate more than just one thing.
So a 10th house Mars would presumably make a good surgeon, yes, but as a single aspect, I think it could also apply to athletic pursuits as a future career.
Your Moon in the 6th might signify a predilection for helping others, or at least being sympathetic to those in need, and channeling some of that Lunar emotion into your everyday work.
So taking the two together...how do you feel about sports medicine?
This is, naturally, just an opinion, and a loose interpretation. Like sibylline pointed out, it's also about your training and your natural inclination. Do you feel like you want to dedicate your life to helping others? Does this stir something inside of you, and that would make the years of training, and the lifetime of learning worth it?
I'm a 4th year medical student myself - I got into med school aspiring to be a gynecologist (Cancer Midheaven, with Venus conjuncting it), and I also have a 12th house Jupiter conjunct Ascendant - both indicators of a future medical profession. However, my personal passion played a decisive role, because most of my other planetary positions seem to point towards a future career as an artist (writer, singer, etc).
So I guess, at the end of the day (and what turned out to be a very long post
), it all boils down to what you really want to do. If you don't want to be a doctor, 10 Marses in the 10th won't make you one. However, if you do, no square or Saturn is strong enough to stop you.