I abandoned an orthopedist last year because I felt that he was using hard-sell tactics on me to get me to agree to surgery for my broken ankle. Basically, he had a surgery slot open in a few days and it seemed like he wanted to book it, with increasing discounts (including exploding offers!) on the surgery as I kept demurring. He was a referral from the urgent care clinic that I went to immediately following the accident, and I think they recommended him solely because he was in the same doctor/hospital network (although he did
not take my insurance!).
So I spent several hours doing research on orthopedic surgeons and went to visit one of the best ones at the best hospital in the city (who also happened to be in-network). He looked at my X-rays and recommended against surgery, saying that the break wasn't that bad and that it would heal fine with just the cast I was already in! He was not as personable and a bit more robotic than the other guy who was giving off the salesman vibes, but I trusted him because of my research rather than the first doc who was essentially just some random referral through happenstance.
A year has gone by now and I'm glad that I didn't get the surgery, because my ankle healed perfectly without it (the second doc was right). I would've been walking faster with the surgery, it's true, but I also would've had permanently implanted metal hardware (which can cause lifelong irritation issues), and which could have necessitated a second surgery for later removal. In hindsight I regret nothing, and of course not having the surgery was also much, much cheaper.
So if that first doctor were to ask me why I'd leave him, I'd just say that it seemed like he was placing profits above the best interests of the patient, or, more charitably, that since he's a surgeon he thinks of surgery as the solution to every problem, even when it's not necessary.