I used to file my own claims for reimbursement and while I did get some payments, it was a nightmare getting them to pay out and the aggravation and frustration were unbelievable. Medication claims were the worst, Dr Visits and labs were only marginally better. I gave up, wasn't worth the headaches, not at all worth it. This isn't the easy thing you think it's going to be. Worst part really was submitting a claim, seeing it process over about 4 weeks time, having it rejected, then having to resubmit everything all over again, wait another 4 weeks for processing, only to have it rejected, again.
Too, you have to know all their little codes and things, like diagnosis codes and CPT codes. If there was one little thing out of place: rejection. And they don't call you to fix it and help you in any way...
If you need to have insurance cover things for you Low T Center at least used to take insurance but Low T Center is a terrible place for treatment. (personal Exp)