How did you find your personal trainer? Need suggestions for finding someone awesome in...

Hi all!  I'm having surgery in about a week and I'd like to have a personal trainer lined up for when I'm cleared to exercise.  I had an awesome trainer, but I moved too far to keep using her and she doesn't know anyone in my area.  I'd really like someone who is experienced with working with the morbidly obese/WLS patients.  Is there some kind of web site for trainer referrals/credentials?  Any suggestions about how to go about doing this?  Any advice would be much appreciated!