It's not "competitive" pay when you pay employees below the bottom 25th percentile range. At least get employees on the right pay scale. US Oncology clearly hates children because the health insurance policies they offer are absurdly expensive for families and offer little to no benefit when needed.
Provide the level of support for your staff that you expect them to provide patients. Imagine being a patient with cancer and needing treatment. Would you want the staff treating you to be over-worked, under-paid, and treated poorly by their employers? That's the US Oncology model at its best.