Matsuo Internal Medicine Hospital, operated by Kyounin-kai Medical Corporation, is located in Shirocho, Mihara City, Hiroshima Prefecture. The hospital offers a wide range of medical services centered on internal medicine, including nephrology, peritoneal dialysis, endoscopy, sleep apnea treatment, rehabilitation, cancer screening, and smoking cessation clinics. It is accredited by the Japan Council for Quality Health Care (JCQHC), having received third-party evaluation for medical quality and safety. The facility is also certified under the Inspection & Accreditation (I&A) system for transfusion medicine, reflecting its high standards in transfusion care. Outpatient hours are from 9:00 to 12:00 in the morning and 14:30 to 17:00 in the afternoon, with closures on Sundays, public holidays, year-end/New Year period, and Obon. English-language assistance is available, and the hospital accepts a variety of cashless payment methods including credit cards, debit cards, and electronic payments. The facility is fully barrier-free and equipped with a parking lot, making it accessible for visitors arriving by car or those with physical disabilities. Health checkups and comprehensive medical examinations are also offered. The hospital is actively engaged in community outreach, regularly publishing the hospital newsletter "Kamome" and the patient service improvement committee bulletin "Hohoemi."