Otsuka Clinic

Otsuka Clinic sits in Shinjuku’s Yotsuya area, a small internal medicine practice with a distinct angle: it combines conventional Western medicine with kampo (traditional Japanese herbal medicine). That makes it genuinely different from your standard GP visit. The clinic has an English-language website and explicitly offers English support, which puts it ahead of most neighborhood clinics in Tokyo. If you’re dealing with something that Western medicine hasn’t fully sorted — chronic fatigue, digestive issues, hormonal stuff — this is worth knowing about. It’s a real clinic, not a wellness center, so you get proper diagnosis alongside the kampo consultation. Yotsuya is easy to reach from central Shinjuku. Not a massive facility, but that’s kind of the point — you’re getting a more considered, individual approach rather than a conveyor belt appointment.