The purpose of this research was to develop and partially assess a self-report scale for measuring doctors' and patients' perceptions of self-communication and other communication competence during a medical interview. Previous research into the components of communication competence and medical discourse were used to develop the Medical Communication Competence Scale (MCCS). It was hypothesized that the items of the MCCS would form four clusters: information giving, information seeking, information verifying, and socioemotional communication. The cluster analysis results provided support for the hypothesis. Results of several other analyses provided additional support for the validity of the MCCS.