I am always of the impression that something "outstanding" in your application will always overwhelm the rest of it when it comes to screening. Thus, if you have a step I of >260, you will probably get interviews everywhere unless you failed half of your M2 classes and your letters say you're evil. If you have 10 publications and a patent on something pathology related, it probably doesn't matter if your step I score is 190.
People always want to know what the "cutoff" would be for an "average" applicant but there really aren't many applicants who are truly average in every area. Program directors probably grant interviews in a different fashion for different categories of applicants - US grads have certain criteria, MD/PhDs are different, IMGs are different, DOs are different, etc etc.
The only way to know if your step I score is good enough is to apply there. If you get an interview, it's good enough and where you are ranked from then on in probably depends on the rest of your application.