I wouldn't put too much stock in that list, mostly because it leaves out one of the most important factors: quality of graduate network.
Connections are essential to success in the business world, and most of my colleagues who went to business school did so as much for the network as the intellectual skill set (worked in healthcare VC before my post-bacc). Networking is one of the primary reasons why the top business schools are as expensive and competitive as they are. It's also the reason why they're is a huge drop off in ROI when you step down into the second tier.
You're not going to be able to network if you don't go to campus. If you're seriously interested in becoming an "executive" of any sort, I would strongly urge you to take a look at the top 20-30 schools and figure out if you can realistically make a long term commitment to b-school (E-MBA programs at these schools are ok if you're older and can't make it full time). With the credentials of a physician, a good GMAT, and some well conceived self-marketing, you should be competitive.
I would suggest avoiding many of the lower tier and night school programs (again, if your goal is to be an "executive"). Remember, an MBA does not carry the same weight as an MD, and having the letters after your name doesn't do that much for on its own. Finally, be aware of MBA program ranking lists outside of Businessweek, the WSJ, and U.S. News. Every school wants to boast that it's number #1 in something, and many lists or listing categories have sprung up recently to accommodate schools rather than potential students. For example, the Princeton Review ranks Colorado State University (online) as it's "Best Administered MBA of 2009". Nobody knows what that really means, but hey, they're ranked higher than Harvard or Wharton in something...