Kasai Yokoyama Naika Kokyukinaika Clinic

Kasai Yokoyama Naika Kokyukinaika Clinic sits on the third floor of the Daini Yoshida Building in Higashi-Kasai, Edogawa — a residential part of east Tokyo that doesn’t see many international clinics. The focus here is internal medicine with a respiratory subspecialty, meaning they’re well-equipped for chronic lung conditions, persistent coughs, asthma, and general adult health issues that don’t require a hospital.

The clinic has some English on their website, which is a decent sign — but don’t assume you’ll walk in and have a full English consultation waiting for you. Realistically, this is a Japanese-primary clinic. A translation app will help at the front desk. The doctors may have some English, but it’s not guaranteed. If you have a specific respiratory issue and you’re in Edogawa, this is a solid local option worth trying — just go prepared.