FOR OUTPATIENT NAG Orthopaedic Clinic led


NAG Orthopaedic Clinic led by a sports medicine specialist, Yoshiaki Nagumo, MD, PhD, was established in 2023 in Shirokane, Tokyo. 

Dr. Nagumo originally started his career as a bone and soft tissue tumor specialist. He is a surgeon who specializes in the treatment of musculoskeletal tumors. After several years of clinical activity, he moved to the US (The University of Iowa) in 2018 for a few years to research regenerative medicine. As a researcher, his main areas of research were cartilage regeneration with mesenchymal stem cells and tissue engineering with cell culture supernatant, also known as conditioned medium, which is one of his current clinical treatment tools.

Dr. Nagumo has been engaged in several sports: weight training, CrossFit, boxing, grappling, trekking and freediving. In 2018 in the US, he accidentally injured his left knee, and the injury was diagnosed as meniscus tears. However, the sports medicine specialist who tended to him instructed him to just rest and neither offered any other treatment nor gave advice. This experience let him strongly feel the need for sports injury treatment specialists who put themselves in the patients’ shoes.

After coming back to Japan, he decided to change his specialty to sports medicine specialist and began support activities of several sports players and teams. 

Dr. Nagumo has a working relationship with the following organizations.

  • THINK FITNESS Corporation (Gold’s Gym in Japan)
  • Asia University track and field club
  • Meiji University swimming club
  • Shobi University female baseball club
  • Waseda University female rubberball baseball club
  • Isao Yoneda Gymnastics

NAG Orthopaedic Clinic provides medical care to various patients who have orthopaedic conditions, such as shoulder and elbow, hip, knee and lower extremities, and spinal disorders, based on precise diagnosis through physical examination and MRI as well as CT scan. In addition, there are several regenerative medicine-based intravenous drips which focus on healing treatment-resistant joint pain and fatigue.

NAG Orthopaedic Clinic also consists of a chiropractic/massage room and training space where you can enjoy relaxation hand therapy and low intensity training, including fixing pelvic tilts and body realignments with expert sports trainers.


Reservation System

NAG Orthopaedic Clinic uses an appointment system. They prepare a certain time for each patient, and you don’t have to worry about waiting times.

Japanese National Health Insurance Coverage

NAG Orthopaedic Clinic offers general orthopaedic treatments covered by Japanese National Health Insurance. 

Common disease/symptoms 

  • Neck pain, cervical sprain (e.g., after traffic accident)
  • Stiff shoulder, rotator cuff injury, tennis elbow
  • Numbness in fingers, carpal tunnel syndrome, trigger finger, sprain finger
  • Back pain, strained back, hip pain
  • Knee pain, knee osteoarthritis, meniscus tears
  • Numbness/pain in legs, sciatica
  • Sprain, hallux valgus
  • Fractures of each bone

Immediate imaging test

NAG Orthopaedic Clinic is affiliated with several MRI and CT centers and same-day imaging testing is available (Japanese insurance covers 70% of an MRI and CT scan). 

Minor surgeries are available

NAG Orthopaedic Clinic provides minor surgeries for slight injuries. 

Several self-funded medical treatments are offered

NAG Orthopaedic Clinic offers several exclusive treatments. 

Part of the treatments

Myofascial release injection:

The injection with ultrasound removes the muscle-derived pain immediately (e.g., neck pain, stiff shoulders, back pain, lower back pain)

Mesenchymal stem cell conditioned medium (MSC CM) therapy

MSC CM is Dr Nagumo’s specialty. It focuses on suppressing inflammation and removing pain and fatigue. MSC CM is the most popular treatment in this clinic.

NMN infusion

NMN is well known as a treatment for several symptoms, such as the following: fatigue, sleep disturbance, dry eyes, diabetes, obesity, heart problem, dementia and so on.

Massage/bodywork space

NAG Orthopaedic Clinic has the facilities for massage/body work offered by a professional sports trainer. Massage/body work only service is available.

Training room 

NAG Orthopaedic Clinic also has training space. There are power racks and other tools. Training room usage only service is available. You can combine all treatments and massage/body work with training room usage.


Appointment system

Appointments are necessary. 

Contact us

Cash not accepted

Credit cards and electronic payments are accepted.

NAG Orthopaedic Clinic welcomes both, patients who have Japanese National Insurance and those who do not. If you have Japanese National Health Insurance, charges are set according to the regulation. If you do not have Japanese National Health Insurance, please let us know beforehand so that we can work with you and discuss the fees with you.

  Reception hours
Monday-Saturday Morning 9:30 - 13:00
Afternoon 14:00 - 18:00

Doctor's no-consultation day
Wednesday, Sunday/ Public Holiday


Yoshiaki Nagumo, MD, PhD

Japanese Board of Orthopaedic Surgery 

Board Certified Member of the Japan Sports Association


NAG Orthopaedic Clinic led

TEL : 03-6432-5880

Counter reception hours9:30-18:00
Telephone reception hours9:30-18:00

  Reception hours
Monday-Saturday Morning 9:30 - 13:00
Afternoon 14:00 - 18:00

Doctor's no-consultation day
Wednesday, Sunday/ Public Holiday


5F, nissoudai27-building 5-6-9, Shirokanedai,
Minatoku, Tokyo 108-0071
5 min from Shirokanedai Station (Tokyo Metro Namboku Line and Toei Mita Line)

Please send your reservation to this email address.