No, you're NOT screwed. I got a 190 on step 1. I repeat, LESS THAN a 190 on step 1. I had pretty good grades and did 40 points better on step 2 (take it early so that it can be seen when you send in your applications). I was also a well rounded candidate. There were a few programs that didn't give me interviews...and I thought some of them were pretty random. I assume that anywhere that had a step 1 cutoff did not offer me one, so some of these might be among those. Those were Boston Children's, Cincinnati, Duke, UNC, Tufts, Children's National and MGH.
BUT, I did get interviews everywhere else I wanted, including CHOP, yes CHOP, Yale, Northwestern, Seattle, Denver, Stanford, Brown, San Fran, Pittsburgh, Johns Hopkins, and a bunch of other places. So trust me, if you're an otherwise good candidate, you'll get plenty of good interviews. Just make sure to apply to maybe a few more than you otherwise would, and you'll do fine.
By the way, I got my first choice at a top institution and am doing great so far. Don't sell yourself short, especially if you are the type of person who will interview well and have done well in your clerkships. Throw in a few safety schools to cover yourself, and you can't go wrong. Good luck!