Your concern is legit, I too felt insecure about the unknowness of it all. I had to pay a deposit which I made through a bank money transfer. I paid the remaining balance with a cashier's check. We sent them a copy of it and when we got to the hospital we turned the check in to the person in charge. When you get to San Diego a driver will text and call you, he will pick you up and take you to the hospital. The hospital is small, nothing like the fancy ones we have here in the states but the doctor that operated on me Dr. Gutierrez was very knowledable, kind and caring. I'm certain they all are professional there as well. Don't be afraid, it will be over before you think about it and you will be on your journey to health. My experience was great, no pain and the nurses were very sweet to me. I wish you the best.