| 来源类型 | Working Paper
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| 规范类型 | 报告
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| DOI | 10.3386/w24486
|
| 来源ID | Working Paper 24486
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| Multimarket Contact in Health Insurance: Evidence from Medicare Advantage |
| Haizhen Lin; Ian M. McCarthy
|
| 发表日期 | 2018-04-09
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| 出版年 | 2018
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| 语种 | 英语
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| 摘要 | Many industries, including health insurance, are characterized by a handful of large firms competing against each other in multiple markets. Such overlap across markets, defined as multimarket contact (MMC), may facilitate tacit collusion and thus reduce the intensity of competition. We examine the effects of MMC on health insurance prices and quality using comprehensive data on the Medicare Advantage (MA) market from 2008 through 2015. Our identification strategy exploits two plausibly exogenous changes to MMC: 1) out-of-market consolidations, which affect MMC but are not likely driven by local market heterogeneity; and 2) reimbursement policy changes in a subset of markets, which encourage additional entry and therefore affect MMC even in markets otherwise unaffected by the policy itself. Across a range of estimates and alternative measures of MMC, our results consistently support the mutual forbearance hypothesis, where we find that prices are significantly higher and hiqh-quality plans become less pervasive as MMC increases. These results suggest MMC as one potential channel through which cross-market consolidations and regulatory policies could alter competitiveness in local markets otherwise unaffected by the merger or policy. |
| 主题 | Health, Education, and Welfare
; Health
; Industrial Organization
; Market Structure and Firm Performance
|
| URL | https://www.nber.org/papers/w24486
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| 来源智库 | National Bureau of Economic Research (United States)
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| 引用统计 |
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| 资源类型 | 智库出版物
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| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/582160
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推荐引用方式
GB/T 7714 |
Haizhen Lin,Ian M. McCarthy. Multimarket Contact in Health Insurance: Evidence from Medicare Advantage. 2018.
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文件名：
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w24486.pdf
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格式：
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Adobe PDF
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