Background and aims: Healthcare management is under increasing pressure to demonstrate that their services are patient-focused and directed to providing the best possible health care for their patients. Consequently, it has become prudent for hospital management to understand and measure the patient’s perspectives so that any perceived gap in the delivery of service is identified and suitably addressed with constrained resources. Therefore, Research on patient satisfaction with outpatient service quality at hospitals has been undertaken in both developed countries and developing countries. However, there remains a paucity of studies evaluating patient satisfaction services. This study aims to assess the levels and determinants of patient satisfaction with outpatient care. Methods: A cross-sectional descriptive survey was conducted in the outpatient waiting areas of a hospital in the Eastern Province of KSA from March to June 2022. Patients and relatives were face-to-face interviewed on satisfaction questionnaires. Results: The satisfaction of patients and relatives about the quality of outpatient care was high, reaching an average of 87.3 percent of patients’ expectations with a minimum of 50 to 100. The booking appointments via phone/online services, long times waiting, and toilet/drinking water facilities are also the lowest level of satisfaction. “The transparency of the information”, “the behavior and competence of medical staff and service staff”, and “the quality of the medical infrastructure and facilities” are three dimensions that impacted patient satisfaction. Conclusions: Overall most of the patients positively evaluated the outpatient services but there are still some aspects of healthcare services that need to improve such as the booking services, the toilet and drinking facilities, the long waiting times, and more transparent information. Recommendations: Healthcare managers should improve the technical quality of care to book an appointment, make more investments in the system infrastructure to reduce the waiting times;