In this paper, I study tiered cost sharing, an innovative incentive structure designed to steer patients toward low-cost providers using large out-of-pocket price differentials. Using administrative data from New Hampshire, where two large insurers utilize tiered pricing programs, I estimate the effects of tiering on choices and spending for common gastrointestinal endoscopic procedures. I first conduct a difference-in-differences analysis using the rollout of one insurer's tiered option. I then develop and estimate a demand model to explicitly compare the tiered design with other common plans. Both the reduced form and structural models imply that the tiered plans are associated with 4.5%-6.3% less in mean per-episode spending than high-deductible and coinsurance-based plans, and do not affect the likelihood of seeking care. I find evidence that the savings is in part due to a salience or "simple pricing" effect whereby patients respond to tiered out-of-pocket prices but not to traditional deductibles or coinsurance rates.
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| http://dx.doi.org/10.1016/j.jhealeco.2022.102663 | DOI Listing |
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