Located in Yoshioka-machi, Kitagunma-gun, Gunma Prefecture, Okamoto Internal Medicine Clinic is a cardiology clinic that opened in May 2003. Dr. Masaji Okamoto, the clinic director, worked at Gunma University Hospital from 1979 and served as the Chief of Cardiology at Gunma Central General Hospital from 1997, bringing over 30 years of experience as a cardiac specialist to local healthcare. Established to provide rapid examination and diagnosis at the general hospital level in response to the increasing prevalence of heart diseases such as myocardial infarction and angina, the clinic offers consultation hours from 8:45 AM to 12 PM and 3 PM to 6 PM. The clinic operates Monday through Saturday mornings, and Monday through Friday afternoons. It is closed on Thursdays and Saturday afternoons. Examination time is set from 1 PM to 3 PM on consultation days excluding Thursdays and Saturdays, and depending on the test type, some examinations may be conducted starting at 8:30 AM. In terms of facilities, the clinic is equipped with echocardiography, which captures cross-sectional images of the heart using ultrasound; Holter ECG, which records 24-hour electrocardiograms to help detect arrhythmia and angina; and bicycle ergometer, which examines changes in ECG and blood pressure during exercise. These examination devices address the characteristic that angina attacks often occur during exercise, improving safety and accuracy compared to the previous method of going up and down stairs. Regarding the medical system, the clinic meets the requirements for the Medical DX Promotion System Enhancement Addition under the April 2025 medical fee revision, and has established systems for online billing, online qualification verification, utilization of medical information through electronic qualification verification, and electronic prescription issuance. As measures against COVID-19, the clinic conducts phone reservations for patients with fever and separates consultation hours, waiting spaces, and examination spaces from general patients. The facility is equipped with parking and barrier-free accessibility, and an environment supporting English-speaking patients is also available.