Nakayama Clinic is located in Yamabukicho, Shinjuku-ku, Tokyo, and provides internal medicine and orthopedic services. Internal medicine follows guidelines from medical societies, treating lifestyle diseases such as hypertension, hyperlipidemia, and diabetes, as well as chronic heart failure, chronic kidney disease, allergic rhinitis, bronchial asthma, sleep apnea syndrome, and other respiratory diseases. A fever clinic is available, and patients with fever are asked to contact in advance to ensure separation from non-fever patients. Orthopedics treats injuries such as fractures, contusions, and lacerations, degenerative conditions including osteoarthritis, neck pain, and back pain, numbness in extremities, and osteoporosis. In addition to medication, wound care and suturing, cast immobilization, orthotics prescriptions, physical therapy, and rehabilitation guidance are provided. Procedures such as ultrasound-guided nerve blocks and Hydro Release are also performed. Orthotic insoles are created for osteoarthritis of the knee and foot disorders. Vaccination services include COVID-19, influenza, and cervical cancer (HPV) vaccines. Health screening services are also offered, including municipal health checkups and corporate health examinations. English services are available, and the facility is barrier-free. Cases requiring specialized care or surgery are referred to nearby advanced medical institutions.