Oba Internal Medicine Kobuki Clinic, located in Kobukicho, Mito City, Ibaraki Prefecture, is an internal medicine specialty clinic that offers a wide range of services, focusing on general internal medicine and cardiology, including the management of chronic kidney disease (CKD) and hemodialysis. From everyday health concerns such as colds and abdominal pain to cardiovascular diseases like hypertension and arrhythmia, as well as the treatment and management of lifestyle diseases, the clinic supports the health of local residents from multiple angles. With fever clinics and vaccinations for influenza and COVID-19, the clinic is equipped to respond to sudden changes in health. For health checkups, the clinic conducts various examinations, including legally required periodic checkups, pre-employment health screenings, and specific health screenings for lifestyle disease prevention. A notable feature is the clinic's provision of follow-up consultations after examinations. Since July 2025, the clinic has accepted cashless payments, including credit cards and transportation IC cards, expanding payment options. Medical services are available in English, and the clinic is equipped with parking and barrier-free facilities, making it an accessible environment for various patients. First-time patients can be seen on a walk-in basis without appointments, following the order of arrival on the same day, which adds to the clinic's convenience.