To better understand the association between considerations for patients provided by registered dietitians and their level of experience in nutrition and dietary guidance for patients with diabetes, we administered a questionnaire to registered dietitians who provide nutrition and dietary guidance for patients with diabetes. Compared to those with less experience in nutrition and dietary guidance, a significantly greater proportion of experienced registered dietitians indicated that “patients’ trust in registered dietitians” and “registered dietitians’ attitude of respect for patients” were important for patients to continue receiving nutrition and dietary guidance. Similarly, a significantly greater proportion of experienced registered dietitians indicated that by “having insufficient understanding of patients’ views of life and values” and “pointing out issues too much”, they either felt rejected or saw a displeased expression on the patient’s face during nutrition and dietary guidance. They further indicated that they managed these issues by “apologizing to the patients” and “ending nutrition and dietary guidance earlier than planned”. Furthermore, a significantly greater proportion of experienced registered dietitians indicated that they felt “trusted by the patients to some extent” and “confident” in their own guidance. These findings suggest that dietitians with more experience in nutrition and dietary guidance were able to build a trusting relationship with patients, which led patients to continue to receive nutrition and dietary guidance.