Located in Oshima, Koto Ward, Tokyo, Kobayashi Clinic is a medical clinic specializing in internal medicine. Consultation hours are from 9:00 to 13:00 on weekdays (Monday through Saturday) in the morning, and from 16:00 to 19:00 on Monday, Wednesday, Thursday, and Friday afternoons. The clinic is closed on Tuesday afternoons, Saturday afternoons, Sundays, and holidays. In the morning on Thursdays, a part-time physician from Juntendo University provides consultations. Registration closes 30 minutes before the closing time, and reservations are recommended for patients with cold-like symptoms as separate room consultations may be considered. The clinic performs various tests including antigen tests, PCR tests, and nucleic acid amplification tests, with results available in approximately 15 minutes. Allergy treatments for hay fever are available, and the clinic also offers sublingual immunotherapy and antibody therapy. Various preventive vaccinations are provided, including influenza vaccine, COVID-19 vaccine, HPV vaccine, pneumococcal vaccine, herpes zoster vaccine, and RSV vaccine. Simultaneous administration of influenza and COVID-19 vaccines is possible. The clinic accepts general health checkups and specific health checkups, and also provides consultations for post-COVID conditions. English-speaking service is available, and the clinic accepts credit cards and electronic payments. Parking is available, and the facility is barrier-free.