KOSEIKAI MEDICAL CORPORATION

Shinjuku NS Building Dental sits on the 4th floor of the iconic NS Building in West Shinjuku — the one with the giant indoor clock atrium. It’s a corporate-area clinic, which means it runs on a working-professional schedule and tends to be organized and efficient. The clinic has some English content on its website, which is a decent sign, but “English website” doesn’t always mean “English-speaking front desk.” Realistically, you may encounter mixed English ability here. For straightforward dental work — cleaning, fillings, basic checkups — that’s manageable. For anything requiring detailed explanation about treatment plans or medication, bring a translation app or a Japanese-speaking friend. Standard Japanese health insurance is accepted. The NS Building location makes it genuinely convenient if you work in West Shinjuku.