If you were diagnosed with CIS, the BCG is the recommended approach IF it doesn't interfere with all of the other things you are on. Another possibility is mitomycin, but again, that is IF it doesn't have any sort of interaction issue.
Research what the top cancer center recommendations are for treatment for CIS if that was the diagnosis. I forgot if you had said that was the original diagnosis. If not, this is not one of those things you can diagnose yourself based on reading.
Like Pat said, pay the $25 and get your records, including the Dr. Notes and PA notes from your visits.
Different treatment options are warranted for different diagnoses. If you think the VA is deviating from the standard treatment for your diagnosis, then bring in the documentation from your research and bring it with you for your next appointment.
I strongly recommend getting a 2nd opinion once you have your records. Go to a cancer center for the 2nd opinion. Then bring the opinion back to the VA and ask them to explain the deviation in treatment plans (if there is one). You may to follow up with the patient advocate again armed with that 2nd opinion also if you feel it is warranted. Even if insurance won't pay for a 2nd opinion it is REALLY important so you have to weigh the risk versus cost and decide what you want to do.
Hope this all works out. Sorry to hear that you have to go through so much consternation trying to figure out the best plan of action.
Mike
Age 54
10/31/06 dx CIS (TisG3) non-invasive (at 47)
9/19/08 TURB/TUIP dx Invasive T2G3
10/8/08 RC neobladder(at 49)
2/15/13 T4G3N3M1 distant metastases(at 53)
9/2013 finished chemo -cancer free again
1/2014 ct scan results....distant mets
2/2014 ct result...spread to liver, kidneys, and lymph...