Area of Expertise
Anaesthesiology, Cardiology, Cardiothoracic Surgery, Cosmetic Surgery


1898-1 Shimoyamaguchi, Hayama-cho, Miura-gun, Kanagawa 240 – 0116

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Clinic Schedule

Monday, Tuesday, Wednesday, Thursday, Friday
08:30a.m. – 11:30a.m.
01:30p.m. – 04:30p.m.
04:45p.m. – 06:45p.m.

08:30a.m. – 11:30a.m.

Sunday, Holidays


Japanese Health Insurance (NHI)
Other forms of insurance accepted after confirmation; reimbursement.

Payment Methods

Visa, American Express, Mastercard, JCB, UnionPay, Diners, Cash

Clinic Highlights

Situated south of Yokohama on the west coast of scenic Miura Peninsula is Hayama Heart Center – cardiologists in Kanagawa. A hospital primarily dedicated to treating patients with heart conditions. Founded in 2000, Hayama Heart handles both diagnosis and surgery, including open-heart surgery and the implantation of mechanical heart devices.

Hayama Heart Center - Cardiologists in Kanagawa corridor

Anesthesiology, Cardiology, Cardiothoracic Surgery, Cosmetic Surgery, Critical Care, Internal Medicine, Nephrology, Neurology (brain, nervous system), Radiology, Surgery

Equipment & Devices
MRI, 64 multislice CT, gamma camera, ultrasound

Dr. Hiroshi Sohara

Licenses, Accreditation and Awards

Board-certified physician, Japanese Society of Internal Medicine,Board-certified specialist, Japanese Circulation Society
Member, Council of Japanese Heart Rhythm Society
Member, Japanese Association of Cardiovascular Intervention and Therapeutics
Member, Japanese College of Cardiology
Member, Japanese Society of Electrocardiology
Procedures Performed
A-V block and sick sinus syndrome, adult congenital heart disease surgery, aortic surgery, atrial flutter, cardiac resynchronization therapy (CRT), Catheter ablation, Coronary artery bypass grafting, implantable cardioverter-defibrillator (IDC) and medication treatments for atrial fibrillation, pacemaker, supraventricular tachycardia, surgical left ventricular restoration, valvular surgery (plasty and replacement), ventricular fibrillation, ventricular tachycardia, WPW syndrome

Clinic Information

The center has eighty-nine beds—including six in its intensive care unit—eleven doctors and 180 staff, and handles an average of 120 outpatients a day. Hayama Heart has a stellar reputation for both surgery and rehabilitation, and was the first facility in Japan to perform a surgical left ventricular restoration. For the past twelve years, it has also been developing a new cardiac catheter ablation method—called a radiofrequency hot balloon catheter—to treat patients with abnormal heart rhythms. This method makes it easier to isolate areas within the heart for treatment, covers more area than other methods, and is easy to use. Trials in Japan have been very successful, and will begin in the U.S. this year.

Along with its specialty, the center offers medical checkups and screenings for colon cancer, cardiac and circulation risk as well as lifestyle diseases. Hayama Heart has several doctors and staff who speak other languages—and plans to add more—and hopes to attract foreign patients, especially from China and other nearby countries.

Hayama Heart Center - Cardiologists in Kanagawa lobby

1898-1 Shimoyamaguchi, Hayama-cho, Miura-gun, Kanagawa 240 – 0116