DNA physicians are responsible for the supervision, management and workup of patients for kidneys, pancreas, and heart transplantation.  DNA is a principal transplant referral center for much of Texas.  Many pre-and post-transplant patients are followed at Dallas Transplant Institute (DTI - part of DNA) by DNA physicians.  These patients primarily come from the Dallas area and from other areas throughout Texas.  DTI also has patients from surrounding states and has an extensive referral base internationally.