Obamacare provides incentives to do good treatments, not just more treatments.
Now, doctors use checklists to ensure that all care follows procedure. Every step is documented to ensure correctness.
In addition, doctors and nurses are getting paid as teams, so everyone will share in the savings or costs from each surgery.
Finally, doctors have financial incentives to prevent patients from being readmitted to the hospital. As a result, they're more likely to be thorough the first time.