I believe all the doctors have the certifications up on their website or they would provide them for u if u asked. This is cmeless's wife posting as he is sleeping after sleeve surgery yesterday- we r here I'n Mexicali with dr aceeves and I really cannot say enough about the quality of care or the hospital we r in. I personally had a lap band with the Lopez corvalla in tj @ hospital Angeles approx 6 years ago ( it slipped and I had it removed at the same place with same surgeon approx 2 years later) quality of care and hospital were outstanding there as well- I also had the sleeve in Jan of 2010 with dr almanza at the hospital Jerusalem - ( I would not recommend going there however) I guess my point is that even if the credentials are there it's best to speak with several previous patients as to the quality of care and overall experience with each surgeon.
Best of luck in ur decision!