BCBS, fed plan, of Florida covered Proton with no questions. Good luck, I hope that you get the answer you are hoping for. Nothing worse than having to change treatment options because of the insurance company's reluctance to pay. I am pretty sure they took your premiums for all these years without complaint.
Looking at your signature I am puzzled why it took so long for your proton treatment. Looks like 4 months. And your PSA trend seems unusual unless you had HT at the beginning and for a few months afterwards.
Age 69 DX 06/14 1 of 24 cores positive, 5% involved, GS 7 (3+4)
2nd opinion from JH GS 6 (3+3)
3rd opinion from UFPTI GS 7 (3+4)
mpMRI Duke; SV biopsy 10/2014 negative
proton at UFPTI 11/14-01/15