Miss Vickie,
I got my therabite through ATOS medical. My ENT faxed them a prescription, and I had to pay in advance ($404.00) They then filed with my insurance, and I was reimbursed 90%. Here's their web address.
http://www.atosmedical.com/ They're located in Wisconsin, and it took about 4 days to get mine once they got my credit card number. I was stuck at about 20mm and now I'm at ~35mm (2 fingers plus

) It has made a significant improvement in my range of motion.
Your ENT or ONC should be able to write you a prescription.
Hope this helps.
Good Health
Chuck