Congratulations on making a great decision to have a tummy tuck. I would suggest that you go the ASPS website (American Society of Plastic Surgeons) or the ASAPS (American Society for Aesthetic Plastic Surgery) to find a qualified board certified plastic surgeon.
In order to be a member of the ASPS, a physician has to have at least 6 years of training and experience in surgery, with 3 years specifically in plastic surgery. They have to be certified by The American Board of Plastic Surgery. They adhere to a strict code of ethics. The fulfill continuing education requirements, including patient safety techniques. They will be your partner, working with you to acheive your goals.
Hope this helps.