A recent survey of nearly 2,000 physicians found cardiologists had the highest annual income, at an average of $364,000, edging out urologists and dermatologists. (Surgeons were not included.)

A recent survey from Merritt Hawkins, a Dallas-based search firm, included updated demographic and salary data on a wide variety of specialties, both invasive and non-invasive among them.

With a median annual base salary of $356,000, cardiologists are the highest-paid workers in the U.S., according to LinkedIn. Cardiologists also had a median total compensation of $400,000 per year.

While the average salary for a cardiologist is $436,849, pay for an individual practitioner is all over the map, literally. The Atlantic paired up with Doximity, a social network for physicians, to highlight a tool that shows salary by specialty and county.

The compensation of CEOs at nonprofit U.S. hospitals may not be based on patient outcomes, the provision of care or benefit to the community. Instead, a JAMA Internal Medicine study published online Oct. 14 found that compensation may be more closely linked to technology and patient satisfaction.

Although the number of women entering the physician workforce has increased over the past two decades, their earnings still lag behind those of their male colleagues. In a research letter published online in JAMA Internal Medicine, researchers reported that according to the latest salary data, the earnings gap between male and female physicians was $56,019.

The median household income in the U.S. dropped by about $4,000 between 2007 and 2013. Is cardiology immune?

In some practices, particularly larger ones, management professionals saw pay increases last year. However, most compensation for these professionals remained static, according to this years "Management Compensation Survey" put forth by the Medical Group Management Association (MGMA).