RNY to DS needed asap with self-pay.
To the best of my knowledge, there are no surgeons in Mexico doing this very complex form of revision, and even if there were, I would not recommend going to Mexico because of the high rate of complications, possible need for more than one operation if complications occur, etc.
There are very few DS surgeons in the USA doing this revision because it's complex and the risks are substantial. I say this not to talk you out of it, just to say that your options are limited and yes, it's going to be expensive. I second the recommendation for Dr. Keshishian, would add Dr. Rabkin in san Francisco to the list, Dr. Elariny (if you are back East) is also very well regarded, and Dr. Ayoola in Denton, TX, Dr. Simper in Utah, and Dr. Boyce in TN.
Larra
I'm not sure if they do revisions, but two more out of country docs worth investigating are Dr. Jao Marchanesi in Brazil or Dr. Baltazar in Spain. I'm hoping some of their patients might have more information to offer so you may be able to contact them.
Valerie
DS 2005
There is room on this earth for all of God's creatures..
next to the mashed potatoes