Today is National Doctors Day, and to celebrate we take a look at the role of a cardiologist.

Like many young people, Dawn Combs got extremely nervous when her primary care doctor referred her to see a cardiologist. "I think that what I was really afraid of was going in and finding out that there was something seriously wrong and having two kids."

But luckily Dawn had good news, nothing too serious. But in the meanwhile she's learned more about what the role of a cardiologist entails. One of those roles is education.

Dr. David Bailey says, "Cardiologists like myself are heart specialists, we're trained to look after patients' hearts. To explain to the patients what they have as a problem, the medications that perhaps may be used, to lifestyle changes that the patient has to address . . . and it also involves procedures or advance testing of the heart for the long term good of the patient."

Another role is being on call for their patients. Dr. Bailey also says, "So, part of the lifestyle for us is part will be office based and part will be hospital based."

Before they can see their first patient, these highly trained physicians spent four years in medical school and then six to eight years in specialized training. Dr. Bailey adds "I'm living the dream. But in reality it's a lot of work. But it's a vocation it's not really a job it's some sort of calling you have to have to do a good job."

Cardiology is a complex field; so many cardiologists specialize in different areas. Do your research to find the best one for you.