Located just a 3-minute walk from Tokyo Station's Yaesu Exit, Nihonbashi Reiwa Internal Medicine is an internal medicine clinic specializing in the treatment of lifestyle-related diseases. Operated by the medical corporation Sakurareikai, the clinic focuses on the diagnosis and treatment of lifestyle-related diseases including diabetes, obesity, and hypertension, with multiple specialist physicians on staff—certified diabetes specialists, hypertension specialists, endocrinology specialists, and general internal medicine specialists. In 2024, the clinic obtained certification as a Japan Diabetes Society-certified Educational Facility Type III, one of only two such facilities in Tokyo, providing comprehensive diabetes care from mild to severe cases. The clinic supports outpatient insulin initiation and insulin pump therapy, enabling advanced treatment without hospitalization. Biochemical test results from blood draws are available in approximately 15–20 minutes, and thyroid and insulin hormone tests in about 30 minutes. The clinic also performs carotid and thyroid ultrasound examinations and coordinates CT, MRI, and endoscopic procedures through medical partnerships. In obesity treatment, the clinic was the first in Japan to introduce outpatient care using insurance-covered GLP-1 receptor agonists and boasts the largest number of treated cases nationwide. A multidisciplinary team of specialist physicians, nurses, and registered dietitians collaborates to provide comprehensive support, including online nutritional counseling. Consultation hours cover weekday daytime and evenings until 7:00 PM, with internet booking and cashless payment options, creating a clinic environment easily accessible for busy professionals.