Volunteering in Israel is a lot easier then working...... would you want to volunteer. If so, then Israel will accept your EMT-b certificate, although they may want to test you, to make sure you actually know your stuff.
I believe Americans can transfer their US Paramedic licenses to Israeli paramedic licenses, although i think they have to do a test with the ministry of health.
To volunteer on a program like the Yocahi program, all you need is very very basic Hebrew, most people take Hebrew tutoring (Ulpan) for two weeks before, and pick the rest up as they go along.
Unlike the UK Israel does have MD's on some of our ICU's.
ASY i wouldn't use the official paramedics site, the forums on it are kind of dead.
For any more information, or for contact numbers/ emails, feel free to write me, AaronLudman@gmail.com
Aaron