HuffPo:

The database released on Wednesday by the federal Centers for Medicare and Medicaid Services lays out for the first time and in voluminous detail how much the vast majority of American hospitals charge for the 100 most common inpatient procedures billed to Medicare. The database — which covers claims filed within fiscal year 2011 — spans 163,065 individual charges recorded at 3,337 hospitals located in 306 metropolitan areas.

It’s a start.