The quality of service have to be started from the need of patient and ended on patient satisfaction. Nursing service can be evaluated by patient satisfaction with RATER dimension. Method: Research design was descriptive exploratorative. Research subject was 30 patients whose check in Poli Penyakit Dalam RSD Mardi Waluyo Blitar, and who was selected using quota sampling technique. Collecting data was structured interviews with help the check list. The interviewer only puts the sign of Ö (check) at appropriate patient answer. Instrument of data collecting was 20 questions items based on the quality of RATER dimension. Result: The nursing service quality in Poli Penyakit Dalam RSD Mardi Waluyo Blitar based on RATER dimension was in bravo position, which means what the customers got is suitable with the patient’s expectation. Discussion: To maintain and improve the quality of nursing care quality, assessment needs to be done periodically and enhanced for in-patient ward.