Is the practice going broke or the doctor? It wasnt clear. The doctors can "earn" whatever they like, but if they are pulling too much of a salary, then it is their own fault.
If their overhead is too high, it is their own fault.
Sure, insurance limits payouts, and there are risks, insurance needs, etc. I get that.
But every insurance payout that I see indicates that the doctor is getting PAID the equivalent of $350-1000/HOUR! And that's being generous and saying that I actually saw the doctor for 15 minutes, which is not the case.
So at $400/hr, the doctor can take home $100/hr.
I think the article's point is that, using your example, Medicare does not pay $400 per hour, but say $150, so the doctor is losing $150 - $300 = $150 loss after overhead. My cardiologist claims that he has to have his stress test equipment recalibrated after conducting a certain number of tests on patients. He says Medicare's reimbursement does not cover the per patient share of the calibration cost, therefore he is taking money out of his pocket to test every Medicare client.