We conducted a phone-based field experiment to investigate the callback rate of psychologists. Providers ( N = 903) in Los Angeles, California who were selected from a health maintenance organization insurance panel list were left voicemails by actors simulating patients of various backgrounds (i.e., race, gender, clinical diagnosis, and ethnic distinctiveness of name). Findings indicated that 71.5% of providers did not return calls to prospective patients. There were no main effects of race and ethnicity on callback. However, ethnic distinctiveness of name moderated the effects of diagnosis. Providers were more responsive to depressed patients with ethnic names, but less responsive to patients with ethnic names and personality or substance abuse disorders. These findings are important because unresponsive providers and insurance companies that do not provide up-to-date panel listings can act as barriers to care, which can have deleterious consequences for help-seekers. Advocacy recommendations and the importance of cultural competency are highlighted.