The coronavirus disease 2019 (COVID-19) outbreak has placed a heavy burden on healthcare workers. We conducted a burnout survey in three hospitals designated as COVID-19 priority hospitals in Tokyo during the third wave of the COVID-19 pandemic. The Japanese Burnout Scale showed higher values than the existing survey of physicians. In particular, burnout is caused by a "lack of motivation" due to the inability to provide general medical services. Based on this survey, we discuss the burnout experienced by physicians during the pandemic.