From a JAMA Network online article (February 4, 2020):
High medical prices and billing practices may reduce public trust in the medical profession and can result in the avoidance of care. In a survey of 1000 patients, 64% reported that they delayed or neglected seeking medical care in the past year because of concern about high medical bills. The field of quality science in health care has developed measures of medical complications; however, there are no standardized metrics of billing quality.
A recent study found that only 53 of 101 hospitals were able to provide a price for standard coronary artery bypass graft surgery. Notably, among the hospitals that provided a price, the price ranged from approximately $44 000 and $448 000 and was not associated with quality of care as measured by risk-adjusted outcomes and the Society of Thoracic Surgeons composite quality score.

In the same way that there is wide variation in pricing, aggressive collection tactics also can be highly variable by institution. In a recent analysis, 36% (48/135) of hospitals in Virginia garnished wages of patients with unpaid medical bills, and 5 hospitals accounted for 4690 garnishment cases in 2017, representing 51% of all cases.7 In total, 20 054 lawsuits were filed in Virginia against patients for unpaid debt. For many hospitals that sue patients, legal action follows multiple attempts to contact patients through letters and calls, and some hospitals may offer to set up payment plans or even negotiate charges.