"[This report] compiles the latest research and data on California's health care systems and shows that consolidation is not limited to any one system, market segment, or geographic region in the state: Most markets across California are highly concentrated. Hospital markets, in particular, are now approaching 'monopoly levels' in many California counties. In addition, there is mounting evidence that mergers of health care companies are resulting in increased prices for health care services, with little or no improvement in quality for consumers."

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