I'm currently interested in using Dr. Illan for my surgery, but it was pointed out to me that he is not listed on https://asmbs.org/patients/find-a-provider. Should I be concerned that he is not? I understand he is a weight loss surgeon and not a Bariatric surgeon, but when I look at his credentials it seems he has extensive training in Bariatric surgery, and I'm left confused. Any input is appreciated!