We examine how substance-use-disorder (SUD) treatment providers respond to private-insurance expansions induced by states’ equal coverage (parity) laws for SUD treatment vis-à-vis general health care services. Economic theory suggests that such laws will lead to changes in providers’ behaviors. We use data on licensed specialty SUD treatment providers in the United States between 1997 and 2010 in a differences-in-differences analysis. During this period, 12 states implemented laws that require equality in coverage for SUD treatment. Following the passage of a state parity law, we find that providers are less likely to participate in public markets, are less likely to offer price discounts to patients, and increase the quantity of health care provided. Further, we find evidence of decreases in treatment intensity following passage of a parity law and of heterogeneity in effects across ownership status.

中文翻译：

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健康保险扩展和提供者的行为：来自物质使用，疾病治疗提供者的证据

我们研究了物质使用失调（SUD）治疗提供者如何应对由州相对于一般医疗服务而言的SUD治疗平等覆盖率（平价）法律引起的私人保险扩张。经济学理论认为，这样的法律将导致提供者行为的改变。在差异分析中，我们使用了1997年至2010年间美国获得许可的特种SUD治疗提供者的数据。在此期间，有12个州实施了法律，要求SUD治疗的保险范围必须平等。在通过州平价法之后，我们发现提供者不太可能参与公共市场，也不太可能为患者提供价格折扣，并增加了所提供的医疗保健数量。进一步，