院長 足立 雅之

Dear Residents and Visitors,
I am pleased to announce the opening of my private clinic specializing in gastroenterology and internal medicine, conveniently located in Sendagi, Bunkyo-ku, Tokyo. After serving as the physician in chief at Sanno Hospital in Akasaka for eight years, I am excited to continue providing high-quality medical care in a more intimate setting.
For English-speaking residents and tourists in Tokyo, finding healthcare professionals who understand and speak English is of paramount importance. Having interacted with numerous foreign patients at Sanno Hospital on a daily basis, I understand the unique healthcare needs of the international community in Tokyo. I am fluent in English and committed to ensuring effective communication and comprehensive care for all patients.
As a specialist in GI endoscopy, I am proud to offer pain-free endoscopic procedures performed under sedation. In addition to this specialized service, my clinic provides a broad spectrum of medical services, including the management of lifestyle-related diseases such as hypertension, hyperlipidemia, and diabetes. We also address various gastrointestinal disorders and offer secondary testing post-medical checkups.
Feel free to consult with me whenever you have concerns or medical inquiries. I am dedicated to providing personalized and attentive care to enhance the well-being of my patients.
Thank you for considering my clinic for your healthcare needs. I look forward to serving you at my new practice.
Sincerely yours,

Masayuki Adachi, MD., PhD.


Graduated from Keio University School of Medicine (M.D.)
Completed the required units at Keio University Graduate School of Medicine (Ph.D)
Resident at Keio University Hospital
Assistant physician, Department of Internal Medicine,
Gastroenterology at Keio University School of Medicine Postdoctoral Research Fellow in Internal Medicine at Columbia University College of Physicians and Surgeons, USA
Faculty in Internal Medicine at the University of California, San Diego School of Medicine, USA
Staff physician at Keio University School of Medicine Deputy Chief, Gastroenterology Department, Eiju General Hospital, Taito-ku, Tokyo
Chief, Internal Medicine Department (Gastroenterology) at Sanno Hospital, Minato-ku, Tokyo
Associate Professor at International University of Health and Welfare

Characteristics of Our Clinic:

Realizing the Clinic You Wished For

  • Providing outpatient care in a serene clinical space based on extensive medical experience
  • Endoscopy Examinations with the Motto "With More Reassurance, More Comfort". Our examination facilities are meticulously designed to accommodate the needs and comfort of our patients
  • Endoscopy examinations conducted by a physician with experience in over 45,000 upper (stomach) and 13,000 lower (colon) cases. The wealth of experience allows for comfortable examinations, whether or not sedation is used
  • Introducing the latest generation endoscopy system (OLYMPUS EVIS-X1 CV1500),
  • Enabling simultaneous examinations of the stomach and colon
  • Offering same-day endoscopy appointment, including on Sundays (Sunday appointments are strictly by reservation only).
  • We provide a space where you can take the pre-examination laxative on-site (some private rooms may incur a fee)
  • "Smart Clinic" Meeting the Needs of Busy Individuals
  • Accepting medical appointments via LINE.
  • Offering online consultations from the convenience of your home or office.