while i can't give you the name of a doctor; i can tell you that if you find one associated with All Children's Hosptial in Saint Petersburg, you will have the very best in the area.
All Children's takes almost all of the insurances in the area and the doctors visit the different clinics All Children's has around the Tampa Bay Area. You would have to go the Saint Pete for the surgery - but I can tell you from my personal experience as a patient for Cardiac surgery over 30 years ago - they are the best. My son sees their specialists for audiology, otolaryngology, and opthamology. I have no complaints at all with any of their doctors.
I went to All Children's website (allkids.org) and here is the list they have for Pediatric Cardilogists:
Cardiology - Pediatric
Arrillaga, Frances M., M.D.
Asante-Korang, Alfred, M.D.
Crawford, Marguerite, M.D.
Dadlani, Gul H., M.D.
Epstein, Michael L., M.D.
Giroud, Jorge M., M.D.
Henry, James G., M.D.
Huhta, James C., M.D.
John, Jonathan Blaine, M.D.
Kurtz, Stephanie A., M.D.
Martinez, Richard M., M.D.
McCormack, Jorge, M.D.
McKenna, Daniel E., M.D.
Stapleton, Gary E., M.D.
Suh, Elsa J., M.D.