Yes:
- If you're in the US, and probably other places, you can look up their PSY# license online and see their credentials, specialties, publications, "approach" or "philosophy", methods, and see if there are any negatives (like complaints). Now, a few complaints aren't necessarily bad; its probably comes with the territory (see below). If they've only been practicing a year and have a bunch of complaints, run away. If they've been around a long time and have a few...personal opinion: don't put too much stock in it. Their approach is important, so you may want to look up the various treatment programs for PTSD. You can find that on this forum.
- Shop around: schedule appointments with a few that look good to you online. And tell them its a get acquainted / "shopping around" visit to make sure there's a good fit between you and your needs, their specialities and approach, and if there's good chemistry. Sometimes there isn't, and this is I think why there can be complaints against therapists that don't necessarily mean anything. Digression: my first visit was awful; I felt that idiot could not possibly help anyone and I complained. Then again, I dunno and maybe his approach works for some people.
- Then decide on which one you want to work with. I like the phrase "work with" because it really is a partnership. Consider how easy you think it would be to open up with them. Without that kind of trust, it won't work.
- Finally, if you get a couple months into it and realize its not going well, you can change. Keep in mind though that therapy is hard, it can be emotionally exhausting, and more than likely, you'll feel like you're getting worse before you get better. To me, it seems like crawling through Crap River having faith that the other side is better. While your neck deep in crap, that can be hard to believe.
Feel free to post the results of your visit and get some feedback here. It might help.
Happy hunting!