Located in Yotsuya, Shinjuku-ku, Tokyo, this clinic serves the local healthcare needs as a designated medical institution under the Livelihood Protection Act and as a medical facility for independent support for immune disorders. The clinic primarily provides internal medicine services, along with respiratory medicine, psychosomatic medicine, infectious diseases, and sexually transmitted diseases. Medical services are performed using electronic medical records systems, simple X-ray imaging, electrocardiograms, ophthalmoscopes, ultrasonic nebulizers, pulse oximeters, and other equipment. The clinic is equipped with two examination rooms, a treatment room, a blood collection room, a waiting room, and a multipurpose room, which serves as a venue for gatherings and providing the latest information. For cases requiring advanced medical equipment or hospitalization, the clinic has a system to refer patients to appropriate medical facilities in coordination with base hospitals such as Keio University Hospital. The clinic also provides a wide range of consultation and support services, including HIV infection confirmation, disease status evaluation, treatment plan development, second opinion services, counseling, and psychological and social support. Clinic hours are from 1:30 PM to 7:30 PM on Monday, Friday, Saturday, and Sunday, with services generally available on public holidays as well. The clinic offers various vaccinations, including A-type hepatitis vaccine 'Aimugen' and B-type hepatitis vaccine 'Heptavax'. For cases requiring hospitalization, the clinic provides referrals to appropriate hospitals, and also accommodates patients seeking second opinions from other medical institutions.