Onai Internal Medicine Clinic, located in Renorihoncho, Isesaki City, Gunma Prefecture, provides comprehensive internal medicine care specializing in diabetes, as well as thyroid disorders, hypertension, dyslipidemia, infectious diseases, and digestive, respiratory, and cardiovascular diseases. The clinic features a team-based healthcare system led by a specialist certified by the Japan Diabetes Society, along with certified diabetes educators, registered dietitians, and clinical laboratory technologists. The facility is equipped for rapid in-house blood glucose and HbA1c testing, and offers insulin pump therapy. Emphasizing nutritional and lifestyle guidance, the clinic takes an approach that does not rely solely on medication and makes referrals to specialists and hospitals when necessary. Patients receive clear explanations about disease conditions, diagnoses, treatments, and the health insurance system through brochures and monitors. The clinic supports automatic payment machines, card payments, and mobile payments, and English services are available. Clinic hours are 9:00 AM to 12:00 PM and 3:00 PM to 6:00 PM on Monday through Wednesday, Friday, and Saturday. The clinic is closed on Thursdays, Sundays, and holidays.