The practice was a specialty that my regular doc referred me to. The guy I saw was actually an associate in the practice of the doctor she suggested. But I couldn't get an appointment as soon as I wanted and since it was the same practice I thought it didn't matter. No need to get into the particulars but I'll tell you I'll only go back for a review of the tests.
If further tests or treatments are suggested, I'll be looking for another referral.
As I often tell others, you are your own best advocate. Educate yourself to the best of your ability, ask questions (that's never a problem for me) but most importantly Follow your gut. If something makes you uncomfortable, don't put yourself in that situation again.