I had a follow-up x-ray here, the first was 8 days prior at Southwest Diagnostic Imaging (SDI) in Gilbert. I paid $34.61 for the one at SDI. First, Simon Med sent me a bill for $123.84, even after I had given them my BCBS info, so I had to call BCBS and then the bill went to them. The next bill I got from Simon Med was for $39.64, which I paid. I called BCBS and asked why they were different, and they said that the pricing differs according to the contract they have with the provider. So I guess I will not be going to Simon Med anymore.