If you have a Bachelors in any of the Biological Sciences, you will be accepted without major problems. You will start on your 5th semester (AKA: Med 1). There is complete financial aid for Med 1 and above in the amount of around $30,500 per year (about $10,250 per semester of which there are 3 per year). Tuition is $4,500 US dollars per semester, so the rest is for your personal expenses . There is only partial financial aid if you have to do Pre-Med (any of the first 4 semesters) because you don't have all the needed credits. The best news is that you have no need to work while you're there if you have full financial aid. Some people were frugal enough to save some of that money from the loans.
Once you graduate, you come back to the US as an MD and it would be of great advantage if you have taken USMLE steps 1 & 2. This way you'll join the ERAS match and hopefully get a residency spot. If you are not ready with your exams, you don't qualify for the match and it only happens once a year. Be prepared to come back and though a doctor, not be qualified or be too qualified for most jobs. It's demoralizing but you need to be prepared .
Ask the school to answer all your questions. I'm sure they'll love to.

All in all, it will be a great four years. Once again, Good Luck.