Slowjamz

I'm new to the hobby and haven't seen any providers yet. I'm concerned with contracting a sexually transmitted illness. Does anyone have any feedback regarding providers being tested and how to approach the subject prior to setting an appointment? Any advice on how to verify validity of testing if told that it has taken place? I imagine that its not good for business if a provider starts getting clients sick, but I don't know how this issue is viewed. Thanks for the input!