I am weird with the way Google algorithm is because of the tracking that I have been doing on a website called Easymed.us that has almost everything that is needed for the search engines to crawl. Needless to say that I have found that though there is google sitemap.xml for this Medical Billing website and also robots.txt file and the code is followed by the standard design required.
Medical Billing site may not be the reason why Google has'nt crawled it yet but the reason might be something else. I am keeping my fingers crossed.