I'm a nurse at Northeast Georgia Health System and talk with the cardiology docs here daily. Ronnie Green Cardiac center is actually the name of one of the Cardiac ICUs here, they were probably talking about the primary cardiac group here The Heart Center (THC). I would choose THC for myself or my family if I needed a cardiologist, they are a large group with excellent doctors...many of which have decades of experience. There were some doctors that left a few years back due to a disagreement over contract terms, which was a big loss, but THC has recovered and does a great job taking care of their patients. I'd recommend Dr. Gaur in Gainesville or Dr. Kolakalapudi in Braselton. Feel free to send me a message if I can provide any other assistance!