<p>I’m Singaporean. I’m now in the US doing a Ph.D.</p>
<p>Arcas, just apply for the direct Ph.D. or MD/Ph.D. after your B.S., it doesn’t matter which system you graduate from.</p>
<p>It’s more important to show that you’re competent enough to do graduate studies.</p>
<p>Secondly, there is nothing you can do to ensure your acceptance into the school you want. You can increase chances but nothing you do will ensure it. I think this is a healthier mindset.</p>