Debate about whether and when to accommodate patient requests for concordant clinicians should consider evidence. This article examines how existing evidence could be used to interpret or inform ethical arguments about whether to accommodate such requests. Studies on patient-clinician concordance yield mixed and inconclusive results. Concordance might contribute to increased patient satisfaction and trust, but these results are not consistent and could be the result of clinicians' communication skills. Given this evidence and the risk of social harm in honoring concordance requests, this article argues that patients' concordance requests should be honored only when health care services would be denied to a patient, such as in a case of a clinician's conscientious objection to providing a service. All other requests should be scrutinized for a reasonable ethical justification. Concordance Requests In this article, we review evidence about patient-clinician concordance-that is, shared characteristics like gender, race, or socioeconomic status-and discuss how it bears on the debate about whether to accommodate patients' requests for clinicians with specific characteristics. Patients may request a clinician with a specific characteristic for a variety of reasons, including personal preference, religious values, or assumptions about who provides the best care. Some might argue that patients, as the vulnerable party, ought to have their requests accommodated but draw a line when preferences are based on socially unacceptable reasons grounded in prejudice, sexism, or racism.