Dr. Vergara, who specializes in pacemakers and such, is an excellent doctor, all around. He implanted a pacemaker/defibrillator for my mother without any complications. A week later, we went to the ER, as my mother was not feeling quite right. I ran into Dr. Vergara in the hallways, explained what was going in, and he almost dragged me to the ER so that he could examine her himself. That spoke volumes to me. He can be intense, but he is definitely very patient care focused. I highly recommend him to anyone who needs such services.