BackgroundAddressing the shortage of healthcare professionals in rural Japan poses significant challenges. At Sanmu Medical Center, incorporating resident physicians into a general medicine training program has proved effective in retaining them as supervising physicians. This study aims to identify the key factors contributing to the success of such programs.MethodsWe used a qualitative research design to comprehensively understand the factors contributing to physician retention in regional community hospitals in areas with physician shortages. Interviews were conducted with four experienced physicians, including the center director, who participated in the general or family medicine training programs at Sanmu Medical Center. Using a semi-structured questionnaire, we explored the factors influencing physician retention in community-based hospitals experiencing shortages. Two physicians specializing in community medicine conducted a content analysis under the supervision of three experts in community-oriented medical education and qualitative research. This approach helped compare retention factors perceived by physicians and the center director.ResultsContent analysis revealed 10 categories and 47 subcategories. The analysis revealed that “Educational activity” and “Supervising physicians and guidance system” are crucial for physician retention in rural hospitals in Japan. The study highlighted key educational factors contributing to retention: engagement in educational activities led to personal and professional growth, creating a rewarding experience for the physicians. Furthermore, a structured supervising physician system provided essential guidance and mentorship, improving the educational environment. Diverse learning opportunities and protected learning times were identified as critical for fostering a sustainable commitment among physicians to work in rural settings. These findings contribute to existing literature by detailing how structured educational activities and mentorship programs in rural hospital settings can significantly impact physician retention.ConclusionsCommunity-based medical education programs that focus on diverse clinical settings, mentorship, and a supportive work environment can enhance physician retention in rural areas. By fostering such educational and professional environments, healthcare institutions can address physician maldistribution and improve care quality in underserved communities. Our study offers practical insights that can be replicated or adapted by other rural hospitals facing similar challenges. It offers targeted strategies to address the unique challenges faced by female physicians in rural healthcare settings.