I financed part of mine. I was going to use Med Choice but they were only given me half of what I needed, then I found out that since my doctor is in Mexico they would not be able to do the loan. They told me to apply to their visa card. I did this with several medical loan companies. Each time they came back with the interest rate it was something like 22% + other fees.
I thought about putting it on my credit card but then the card company charges you 3% because it is out of the country and the doctor was going to charge me their finance fee 5%. That is 8% more to my credit card interest rate.
I ended up taking a loan with Lendingclub.com. If you have a credit score of 670 and above you qualify. Then different members loan you money. You have to write up a summary of why you need the money. Pretty cool concept.
I got the money and paid my doctor with Paypal. Paypal guarantees your money. If you cancel the surgery or something happens and you dispute it with Paypal you may get the money back instead of loosing it.
I forgot to mention if you use a credit card. You should ask your doctor if they use Paypal. Then you should register your credit card with Paypal and have the deduction made from the credit card as if you are paying for something bought online. This way the credit card will not charge you the 3% interest for using it in a foreign country and neither will the doctor (incase they charge finance fees that are applied to them)