I've been through a hair transplant myself, so I can definitely understand the importance of finding the right surgeon. One thing I found helpful was looking at before-and-after photos of their previous patients to get a sense of their work. I also made sure to ask about their experience and how many procedures they've done.
On the flip side, some red flags to watch out for are surgeons who offer extremely low prices or try to rush you into making a decision. My procedure took about 8 hours and cost around $10,000, so be wary of any offers that seem too good to be true. Ultimately, trust your gut and make sure you feel comfortable with the surgeon before moving forward.