I agree with @lisakinpa , I would be picking up the phone and just asking (respectfully of course) what my next step is and how I might get that expedited. Sometimes you have to call the insurance company directly. If this clinic cannot get things going due to equipment issues, you can request to be sent elsewhere. This is another thing you could address directly with your insurance; they will have a list of providers.
I understand you have a confirmed diagnosis, do you have an oncologist yet?