You're question is not one that is easy to answer quickly. I think applying to medical physics programs is fairly competitive, because they don't accept very many applicants. As far as which schools to apply to, I think some schools require the physics GRE, and some strongly recommend it. If you are not planning on taking the physics GRE, then you might want to stick to schools that don't strongly recommend it. Also, you will probably want to take into account whether a program is accredited or not, that could be important down the road when you go to get a job. Also, you might want to have some idea what area of medical physics you are interested in, like medical imaging or radiation oncology. I think pretty much any program that accepts you will also provide funding. Also, do you want to get a PhD or just a masters? Those are some things to think about when deciding where to apply.