I'm not comfortable putting exact numbers, but above the six figure mark. However, about a third of my final salary came from overtime and call. I like to work a lot. Also, I'm from one of the most expensive areas in the US so salaries in there area tended to be a bit higher (though not high enough to make up for cost of living).
I found it to be a great job to have while preparing to apply for medical school. I liked it a lot, but it wasn't what I wanted to do "when I grow up".