I'm fine with physicists making good/decent money. Many of the new grads are PhDs (5-6 years) and residency trained (1-2 years). Not too much shorter than our training (unless you are MD/PhD). Depending on how well staffed the physics side of the department is, they may be grinding away, doing QA on nights/weekends. Some become really clinically oriented over time as well. A good physicist in the department can make a world of difference. And yes, their boards are hard as hell. Don't they take on a decent amount of liability as well?