Located about a 9-minute walk from JR Sotobo Line Sodegaura Station in Narawa, Sodegaura City, Chiba Prefecture, Yamaguchi Clinic is a historic clinic that has provided medical care in this area for generations since the Edo period. Currently operating as the core facility of the Medical Corporation Kōkyūkai, it offers a wide range of specialties including Internal Medicine, Orthopedics, Rheumatology, Rehabilitation, Respiratory Allergy, Cardiology, and Gastroenterology, with specialists from each department collaborating to provide comprehensive care. One of the clinic's key features is the latest rheumatology treatment in the orthopedic field, with an integrated treatment system covering outpatient care, hospitalization, surgery, and rehabilitation. In the rehabilitation department, physical therapists carefully evaluate each patient's physical function and develop customized rehabilitation plans aimed at fundamental recovery rather than symptomatic treatment. The respiratory and allergy clinics also handle highly specialized treatments such as biological agents for refractory asthma, and provide guidance on home oxygen therapy. In addition to 19 inpatient beds, the clinic offers half-day and one-day comprehensive health screenings, serving both as a local primary care provider and a referral facility to higher-level medical institutions. English-speaking services are available, and the clinic accepts credit cards and electronic payments. Parking and barrier-free facilities are also provided.