Hey there!

As far as i know, you first need a FCCPT Type 1 review for educational credentials review, health care worker certificate and verification of your eligibility to practice in the UK. Then you might contact the PT Board of the state on which you want to work and fill up a petition to take the NPTE exam. you will get a ATT (i think its called, an approval to sit for the exam). Once you've passed the exam you will get your license (not sure about this in Cali). Once you get your license you would look for someone who would sponsor your visa. Then you wait for your visa to be ready and you're ready!

Its a tough process but at least you dont have to take an english proficiency exam haha

I've been searching on the net and i've noticed that there's some agencies that would contract you and they will sponsor your visa and help with all the stuff and will get you a job in almost any state you want.

Hope this fits to your needs! I also want to work in the US as a PT!

PS: on the fccpt website there's a red bar on the top about the type 1 requirements.. Its very helpful. Good luck!