Located in Honshuku, Kitamoto City, Saitama Prefecture, Hayashida Naika Iin is a clinic with inpatient beds operated by Medical Corporation Oumi Kai. Specializing in internal medicine, the clinic offers gastroenterology, cardiovascular medicine, and pediatrics. It addresses a wide range of symptoms and conditions, from common issues such as fever, headache, dizziness, and abdominal pain to cardiovascular diseases including hypertension, ischemic heart disease, and arrhythmia, as well as thyroid and endocrine disorders and allergies. Consultation hours are from 9:00 AM to 12:30 PM in the morning and 3:00 PM to 5:45 PM in the afternoon, with closures on Sundays, public holidays, and the New Year period (December 31 to January 3). The clinic provides support in English and Korean, ensuring that patients who have difficulty communicating in Japanese can receive care with confidence. A parking lot is available for those arriving by car, and the facility is barrier-free, offering an accessible environment for individuals with physical disabilities and elderly patients. As a community-based comprehensive internal medicine clinic, it serves the healthcare needs of residents in Kitamoto City and surrounding areas.