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Objective: To determine whether there are significant differences in costs of treatment and readmission rates for hospital consultations undertaken by female versus male physicians in China. Methods: Using data from the Urban Employee Basic Medical Insurance program from January 2018 through October 2019, we investigated spending patterns and clinical outcomes for patients at tertiary hospitals in one of the largest cities in China by the gender of the attending physician. Our sample included 79,085 hospitalizations treated by 3993 physicians in internal medicine departments. We examined the association between physician gender and visit cost using a multivariable linear model. We examined the association between physician gender and 30-days readmission rates using a multivariable probability model. We adjusted for a rich set of patient characteristics, primary diagnosis fixed effects, and hospital fixed effects. In addition, we used patient fixed effects in a robustness analysis. Results: Adjusting for primary diagnosis fixed effects, spending per visit was 4.1% higher for patients treated by male physicians than for those treated by female physicians, a statistically significant difference (95% CI [1.5%, 6.7%]). This pattern persisted after further adjusting for hospital fixed effects (3.2% [1.2%, 5.2%]), patient characteristics (3.2% [1.2%, 5.1%]), and patient fixed effects (4.2% [1.8%, 6.7%]). The difference is mainly driven by higher spending on drugs (8.7% [3.9%, 13.6%]) and out-of-pocket costs (3.9% [1.7%, 6.0%]). No statistically significant differences were observed in the readmission rates of patients treated by male and female physicians in any of our three model specifications. Conclusions: Spending per visit was significantly higher among patients treated by male physicians than among those treated by female physicians, with the difference mainly driven by spending on drugs and out-of-pocket costs. No significant difference was observed in the hospital readmission rates of patients treated by male and female physicians. These findings have important implications for gender equality in medicine and health care quality and efficiency in developing countries. [ABSTRACT FROM AUTHOR]