Gankenkyukai Ariake Byoin

Gankenkyukai Ariake Byoin is one of Japan’s most respected cancer-focused hospitals, and its dermatology department handles both general skin conditions and cancer-adjacent cases — think suspicious moles, skin tumors, and post-treatment skin issues, not just rashes. It sits in Ariake, a waterfront area in Koto that’s a bit out of the way but well-connected via Yurikamome or Rinkai Line.

For English speakers, the clinic has conversational English capacity — staff can get through the basics without you needing to panic-translate everything on your phone. It’s not a full bilingual setup, but it’s workable. Given the hospital’s oncology focus, the dermatology team here tends to be thorough and diagnostically serious. If you’ve got a skin concern that needs more than a quick look, this is a place that will actually dig into it. Bring your insurance card and any relevant medical history in writing — ideally in Japanese if you can manage it, though English documents won’t be turned away.