Tsuboi Clinic, located in Honmachi, Otake City, Hiroshima Prefecture, is an internal medicine specialty clinic operated by Medical Corporation Eiseikai. In addition to internal medicine, it provides treatment for respiratory medicine, gastroenterology, and allergy. Established in 1976 as an internal medicine and respiratory medicine hospital, it has a long track record of service, changing its name to Clinic and becoming a corporation in 2020. The clinic treats internal medicine, respiratory medicine, gastroenterology, and allergy, offering specialized care including asthma, sleep disorders, and smoking cessation. For asthma, it provides treatment for symptoms such as shortness of breath, wheezing, nighttime breathing difficulties, and coughs lasting more than 10 days. For sleep disorders, it handles various types including insomnia, sleep apnea syndrome, and circadian rhythm sleep disorders. The smoking cessation clinic treats nicotine dependence as covered by insurance treatment, proposing individualized treatment methods after counseling. English service is available, and parking is provided. Clinic hours are from 9:00 AM to 12:30 PM in the morning, and from 3:00 PM to 6:00 PM in the afternoon on Mondays, Tuesdays, Wednesdays, and Fridays. Closed on Thursday afternoons, Saturday afternoons, Sundays, and holidays.