Koizumi Internal Medicine Clinic is an internal medicine clinic located in Kujira-cho, Nikko City, Tochigi Prefecture. The clinic specializes in internal medicine and allergy departments, with a particular focus on allergic diseases. According to their official website, they provide specialized treatment for allergic conditions such as hay fever, atopic dermatitis, and asthma, and desensitization therapy is also available on a regular basis. The clinic offers on-site parking for convenient access. Aiming to be a trusted primary care physician for patients, the clinic provides specialized medical care for internal medicine and allergic diseases.