A recent discussion on reddit sheds some interesting light on what it's like to work there.
I spent 2 years with these guys - here's the pros/cons of the PM job:
Competitive or Good Salary
Great food in the cafeteria
Offices are in newer buildings
Makes you valuable in EMR consulting circles
Pretty much only hire college graduates. You're old if you've been there 4-6 years.
Closed doors on recruitment, promotion, and firing processes.
Good Managers (TL's) are hard to find, most are made managers within 12 months of graduating college.
The unspoken rule is that you are expected to work especially long hours because of the pay
Located outside of Madison, WI
High turnover rate
I would like to note that Epic has a unique management structure, in that it is incredibly flat and filled with entry level managers and employees. They hire a lot, but they also fire a lot, giving it a mushroom management, or burn and turn structure. I started having anxiety attacks after the first year, and got out after the second year to pursue a software position in a non-healthcare related field, because unless you become a TL within 6 months of completing your training, you have absolutely no idea why people are promoted, hired, or fired.