It's not that simple, my understanding is that there's more than a few tests that they will perform on you in order to determine what's going on. If you're going to a general practice doc, their first reaction isn't going to be putting you on test. They'll probably monitor you with a few more tests over a period of time, and try to restore your natural testosterone via clomid or other means as DBdude said. And if they ever figured out that you were taking prosteroids for the purpose of suppressing your natural test, that would definitely be a problem as well.
If you really want a prescription for test, you need to find an anti-aging doc. They don't require clinically low (sub-250) test levels, rather they operate on a basis of "hormonal optimization". The only thing is, most docs of that type are going to put you on cyp or enth at around the 200 mg/wk mark. That said, if your test WAS suppressed for any reason, but you could bring it back up around normal on your own... nothing would stop you from filling your test script and stocking it up.
At the end of the day, best thing with the doctor is just to be straight up. If you're honest, they may be more inclined to help you.