An experiment was conducted to examine the impact of patients' freedom to choose a physician and health locus of control on patient satisfaction. The experiment was set within the scenario of a patient suffering from a lengthy viral infection after visiting a health clinic for the first time. All constructs with corresponding measurements are discussed and their relationships with satisfaction are examined. Hypotheses are developed and tested for each relationship using pencil and paper scenarios of a patient's service encounter at a health clinic. A 2 x 2 full factorial between subjects experimental design was used with 99 subjects. Results of the experiment indicated different patterns of satisfaction among subjects based on measures of health locus of control (HLC). Individuals with an internal HLC were more satisfied with having a choice of a physician than not having a choice and were also more satisfied than external HLC individuals who had a choice. In contrast, individuals with an external HLC did not discriminate between having or not having the opportunity to choose a physician.