Located in Oiwada, Tsuchiura City, Ibaraki Prefecture, Oishi Internal Medicine Clinic is a medical facility focused on specialized management of chronic diseases, including diabetes, hypertension, chronic nephritis, and dialysis, with internal medicine as its core specialty. The director has authored specialized books on chronic kidney disease treatment, and under a medical policy prioritizing kidney function preservation and dialysis avoidance, the clinic provides comprehensive care to local patients. The clinic is equipped with dialysis beds and actively accepts patients requiring dialysis. With a multidisciplinary team including registered dietitians, physical therapists, and nurses, the clinic offers dietary guidance through recipe distribution for diabetic and dialysis diets and cooking classes, supporting lifestyle improvement. The ability to provide services in English is a notable feature, and the clinic accepts various payment methods including credit cards, debit cards, and electronic payments. The facility is equipped with parking and barrier-free features, creating an accessible environment for a wide range of patients. Additionally, the clinic supports online reservations and telemedicine, enhancing convenience for patients seeking care.