Hitozaka Clinic is an internal medicine clinic located in Kudan-kita, Chiyoda-ku, Tokyo, offering services in English. The clinic holds internal medicine and cardiology outpatient clinics on Thursday afternoons from 1:30 PM to 5:30 PM. The attending physician is Dr. Akiko Sakai, who graduated from Tokyo Women's Medical University School of Medicine and served as Director of the Cardiology Outpatient Clinic at the same university, with numerous domestic and international research publications. She holds multiple board certifications including Japan Circulation Society Specialist, Japan Society of Internal Medicine Certified Physician and General Internal Medicine Specialist, Japan Atherosclerosis Society Specialist and Councilor, Japan Society for Tobacco Control Certified Specialist, and AHA qualifications. The clinic provides treatment for hypertension, arrhythmia, adult disease prevention, health management, and consultation on health checkup results. Diagnostic services include vascular age measurement for arteriosclerosis assessment, ECG, and general examinations. For vaccinations, shingles vaccine is available by appointment for those aged 50 and above, and cervical cancer vaccine appointments are also accepted. Clinic hours are 1:00 PM to 6:00 PM on Monday, Wednesday, and Friday; 1:30 PM to 5:30 PM on Thursday afternoons; and afternoon hours on Tuesday. Closed days are Saturdays, Sundays, 1st to 5th Sundays, 1st to 5th Saturdays, holidays, January 1-4, and December 28-31.