The 20 Best Juvenile Idiopathic Arthritis (JIA) Doctors in Japan

Find the Top Juvenile Idiopathic Arthritis (JIA) Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 208 doctor with experience in Juvenile Idiopathic Arthritis (JIA) near Japan. Of these, 172 are Experienced, 21 are Advanced, 13 are Distinguished and 2 are Elite.

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208 providers found
    Elite in Juvenile Idiopathic Arthritis (JIA)

    Masaki Shimizu
    Elite in Juvenile Idiopathic Arthritis (JIA)

    Masaki Shimizu
    Tokyo, JP 

    Masaki Shimizu practices practicing medicine in Tokyo, Japan. Mr. Shimizu is rated as an Elite expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). He is also highly rated in 35 other conditions, according to our data. His clinical expertise encompasses Juvenile Idiopathic Arthritis (JIA), Arthritis, Kikuchi Disease, Juvenile Dermatomyositis, and Bone Marrow Aspiration.

    Elite in Juvenile Idiopathic Arthritis (JIA)

    Masaaki Mori
    Elite in Juvenile Idiopathic Arthritis (JIA)

    Masaaki Mori
    Tokyo, JP 

    Masaaki Mori practices practicing medicine in Tokyo, Japan. Mr. Mori is rated as an Elite expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). He is also highly rated in 21 other conditions, according to our data. His clinical expertise encompasses Juvenile Idiopathic Arthritis (JIA), Respiratory Syncytial Virus (RSV) Infection, Kawasaki Disease, and Arthritis.

    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Shumpei Yokota
    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Shumpei Yokota
    Toyonaka, JP 

    Shumpei Yokota practices practicing medicine in Toyonaka, Japan. Yokota is rated as a Distinguished expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). They are also highly rated in 9 other conditions, according to our data. Their clinical expertise encompasses Juvenile Idiopathic Arthritis (JIA), Griscelli Syndrome, Neonatal Onset Multisystem Inflammatory Disease, Familial Cold Autoinflammatory Syndrome, and Bone Marrow Aspiration.

    Learn about our expert tiers
    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Takako S. Miyamae
    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Takako S. Miyamae
    Tokyo, JP 

    Takako Miyamae practices practicing medicine in Tokyo, Japan. Ms. Miyamae is rated as a Distinguished expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). She is also highly rated in 13 other conditions, according to our data. Her clinical expertise encompasses Juvenile Idiopathic Arthritis (JIA), Arthritis, Juvenile Dermatomyositis, Polymyositis, and Bone Marrow Aspiration.

    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Mao Mizuta
    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Mao Mizuta
    Kobe, JP 

    Mao Mizuta practices practicing medicine in Kobe, Japan. Ms. Mizuta is rated as a Distinguished expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). She is also highly rated in 5 other conditions, according to our data. Her clinical expertise encompasses Juvenile Idiopathic Arthritis (JIA), Kawasaki Disease, Arthritis, and Polyarteritis Nodosa.

    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Syuji Takei
    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Syuji Takei
    Kagoshima, JP 

    Syuji Takei practices practicing medicine in Kagoshima, Japan. Takei is rated as a Distinguished expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). They are also highly rated in 9 other conditions, according to our data. Their clinical expertise encompasses Blau Syndrome, Juvenile Idiopathic Arthritis (JIA), Arthritis, and Rheumatoid Arthritis (RA).

    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Yasuo Nakagishi
    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Yasuo Nakagishi
    Kobe, JP 

    Yasuo Nakagishi practices practicing medicine in Kobe, Japan. Mr. Nakagishi is rated as a Distinguished expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Juvenile Idiopathic Arthritis (JIA), Kawasaki Disease, Arthritis, and Chromosome 13q Duplication.

    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Tomoyuki Imagawa
    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Tomoyuki Imagawa
    Kanagawa, JP 

    Tomoyuki Imagawa practices practicing medicine in Kanagawa, Japan. Mr. Imagawa is rated as a Distinguished expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Juvenile Idiopathic Arthritis (JIA), Griscelli Syndrome, Muckle-Wells Syndrome, Neonatal Onset Multisystem Inflammatory Disease, and Bone Marrow Aspiration.

    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Naomi Iwata
    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Naomi Iwata
    Okazaki, JP 

    Naomi Iwata practices practicing medicine in Okazaki, Japan. Ms. Iwata is rated as a Distinguished expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). She is also highly rated in 6 other conditions, according to our data. Her clinical expertise encompasses Juvenile Idiopathic Arthritis (JIA), Juvenile Dermatomyositis, Arthritis, and Dermatomyositis.

    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Akihiro Yachie
    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Akihiro Yachie
    Kanazawa, JP 

    Akihiro Yachie practices practicing medicine in Kanazawa, Japan. Mr. Yachie is rated as a Distinguished expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). He is also highly rated in 22 other conditions, according to our data. His clinical expertise encompasses Familial Mediterranean Fever, Juvenile Idiopathic Arthritis (JIA), Hemophagocytic Lymphohistiocytosis, Neonatal Hemochromatosis, and Bone Marrow Transplant.

    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Natsumi Inoue
    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Natsumi Inoue
    Kanazawa, JP 

    Natsumi Inoue practices practicing medicine in Kanazawa, Japan. Ms. Inoue is rated as a Distinguished expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). She is also highly rated in 9 other conditions, according to our data. Her clinical expertise encompasses Juvenile Idiopathic Arthritis (JIA), Polyarteritis Nodosa, D-Plus Hemolytic Uremic Syndrome, and Hemolytic-Uremic Syndrome.

    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Hiroaki Umebayashi
    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Hiroaki Umebayashi
    Sendai, JP 

    Hiroaki Umebayashi practices practicing medicine in Sendai, Japan. Mr. Umebayashi is rated as a Distinguished expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Juvenile Idiopathic Arthritis (JIA), Muckle-Wells Syndrome, Neonatal Onset Multisystem Inflammatory Disease, and Familial Cold Autoinflammatory Syndrome.

    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Tomohiro Kubota
    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Tomohiro Kubota
    Minamisatsuma, JP 

    Tomohiro Kubota practices practicing medicine in Minamisatsuma, Japan. Mr. Kubota is rated as a Distinguished expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Blau Syndrome, Juvenile Idiopathic Arthritis (JIA), Arthritis, and Uveitis.

    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Tomo Nozawa
    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Tomo Nozawa
    Yokohama, JP 

    Tomo Nozawa practices practicing medicine in Yokohama, Japan. Mr. Nozawa is rated as a Distinguished expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Juvenile Dermatomyositis, Juvenile Idiopathic Arthritis (JIA), Polymyositis, Dermatomyositis, and Bone Marrow Aspiration.

    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Nami Okamoto
    Distinguished in Juvenile Idiopathic Arthritis (JIA)

    Nami Okamoto
    Sakai, JP 

    Nami Okamoto practices practicing medicine in Sakai, Japan. Ms. Okamoto is rated as a Distinguished expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). She is also highly rated in 3 other conditions, according to our data. Her clinical expertise encompasses Juvenile Idiopathic Arthritis (JIA), Arthritis, Rheumatoid Arthritis (RA), and Sjogren Syndrome.

    Advanced in Juvenile Idiopathic Arthritis (JIA)

    Kenichi Nishimura
    Advanced in Juvenile Idiopathic Arthritis (JIA)

    Kenichi Nishimura
    Yokohama, JP 

    Kenichi Nishimura practices practicing medicine in Yokohama, Japan. Mr. Nishimura is rated as an Advanced expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Juvenile Idiopathic Arthritis (JIA), Arthritis, Protein Deficiency, Chronic Recurrent Multifocal Osteomyelitis, and Bone Marrow Aspiration.

    Advanced in Juvenile Idiopathic Arthritis (JIA)

    Ryoki Hara
    Advanced in Juvenile Idiopathic Arthritis (JIA)

    Ryoki Hara
    Yokohama, JP 

    Ryoki Hara practices practicing medicine in Yokohama, Japan. Hara is rated as an Advanced expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). They are also highly rated in 2 other conditions, according to our data. Their clinical expertise encompasses Juvenile Idiopathic Arthritis (JIA), Arthritis, Dermatomyositis, and Sjogren Syndrome.

    Advanced in Juvenile Idiopathic Arthritis (JIA)

    Hitoshi Irabu
    Advanced in Juvenile Idiopathic Arthritis (JIA)

    Hitoshi Irabu
    Tokyo, JP 

    Hitoshi Irabu practices practicing medicine in Tokyo, Japan. Mr. Irabu is rated as an Advanced expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Kikuchi Disease, Juvenile Idiopathic Arthritis (JIA), Kawasaki Disease, and Juvenile Dermatomyositis.

    Advanced in Juvenile Idiopathic Arthritis (JIA)

    Yuichi Yamasaki
    Advanced in Juvenile Idiopathic Arthritis (JIA)

    Yuichi Yamasaki
    Kagoshima, JP 

    Yuichi Yamasaki practices practicing medicine in Kagoshima, Japan. Yamasaki is rated as an Advanced expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). They are also highly rated in 6 other conditions, according to our data. Their clinical expertise encompasses Blau Syndrome, Juvenile Idiopathic Arthritis (JIA), Muckle-Wells Syndrome, and Neonatal Onset Multisystem Inflammatory Disease.

    Advanced in Juvenile Idiopathic Arthritis (JIA)

    Masato Yashiro
    Advanced in Juvenile Idiopathic Arthritis (JIA)

    Masato Yashiro
    Okayama, JP 

    Masato Yashiro practices practicing medicine in Okayama, Japan. Mr. Yashiro is rated as an Advanced expert by MediFind in the treatment of Juvenile Idiopathic Arthritis (JIA). He is also highly rated in 8 other conditions, according to our data. His clinical expertise encompasses Idiopathic Pulmonary Hemosiderosis, Juvenile Idiopathic Arthritis (JIA), Autoerythrocyte Sensitivity, and Gardner-Diamond Syndrome.

    While we make every effort to provide the best results possible, data is currently limited outside of the United States. Doctors listed may include both clinicians and researchers, and individuals relocate frequently. We recommend contacting doctors directly to confirm their location and areas of focus. Contact information is provided when available. Learn more about our expert tiers.
    Showing 1-20 of 208

    Last Updated: 04/28/2026

    What is the definition of Juvenile Idiopathic Arthritis (JIA)?

    Juvenile idiopathic arthritis (JIA), previously known as juvenile rheumatoid arthritis, is a type of joint inflammation that occurs in children and adolescents before the age of 16, causing joint pain, stiffness, and swelling for more than six weeks. The term, “idiopathic,” means of unknown cause, although juvenile idiopathic arthritis is thought to be an autoimmune disorder, affecting females more than males. Nearly 50% of children and adolescents will outgrow the disease; however, it can still cause lasting joint damage. There are several types of juvenile idiopathic arthritis, which are determined by their symptoms, the affected joints, lab tests, and family history, and which include the following: Systemic juvenile idiopathic arthritis – This type of juvenile idiopathic arthritis affects one or more joints, causing joint inflammation accompanied by a fever that lasts at least two weeks. In addition, systemic juvenile idiopathic arthritis may also be accompanied by a skin rash, or enlarged lymph nodes, lungs, liver, or spleen. Oligoarticular juvenile idiopathic arthritis (Oligoarthritis) – This type of juvenile idiopathic arthritis is the most common type (more than 50%) and occurs in four joints or less during the first six months of the disease and has two subtypes: 1) persistent oligoarthritis (four affected joints or less after six months); and 2) extended oligoarthritis (more than four affected joints after six months). Individuals with oligoarthritis have an increased risk of developing eye inflammation (uveitis or iridocyclitis). Rheumatoid factor positive polyarticular juvenile idiopathic arthritis (Polyarthritis) – This type of juvenile idiopathic arthritis affects more than five joints, usually the fingers or toes, during the first six months of the disease and is similar to adult rheumatoid arthritis, as patients with this type test positive for rheumatoid factor and may develop small bumps near joints (rheumatoid nodules). Rheumatoid factor negative polyarticular juvenile idiopathic arthritis (also called Polyarthritis) – This type of juvenile idiopathic arthritis affects five or more joints during the first six months of the disease; however, patients with this type test negative for rheumatoid factor. Psoriatic juvenile idiopathic arthritis – This type of juvenile idiopathic arthritis occurs alongside psoriasis, a skin disorder which is characterized by reddened skin plaques (patches) covered with white scales and which can also include nail abnormalities (pitting) and eye inflammation. Enthesitis-related juvenile idiopathic arthritis (Juvenile spondyloarthritis) – This type of juvenile idiopathic arthritis affects the areas where bone connects with tendons, ligaments, or other connective tissue, usually in the hips, knees, or feet, causing tenderness (enthesitis), along with joint inflammation, and may affect other areas of the body, such as the eyes (uveitis), and is more common in males than females. Reactive arthritis (Reiter’s syndrome) – This type of arthritis develops as a reaction to bacterial infections, such as shigella, salmonella, yersinia, or genitourinary chlamydial infection (sexually transmitted disease), and occurs abruptly, causing fever, joint pain and inflammation, painful urination, and eye infection (conjunctivitis). Juvenile systemic lupus erythematosus (Lupus) – This disease can cause joint inflammation in addition to inflammation in several other areas of the body. Undifferentiated arthritis – This type of juvenile idiopathic arthritis covers any type that does not fall into the above categories.

    When should I see a Juvenile Idiopathic Arthritis (JIA) doctor in Japan?

    There are various reasons why you may want to see a specialist, such as: 

    • Your primary care provider recommends it. 
    • Your condition requires expert knowledge and specialized care. 
    • Your symptoms persist or worsen despite treatment. 
    • You need specialized testing or procedures. 
    • You want a second opinion.  

    What should I consider when choosing a Juvenile Idiopathic Arthritis (JIA) doctor in Japan?

    It’s important to see a provider with expertise in your specific condition. Each provider profile in MediFind’s doctor database includes information on which conditions they treat, years of experience, research contributions, languages spoken, insurance plans accepted, and more.  

    How do I find the best Juvenile Idiopathic Arthritis (JIA) doctor in Japan?

    You can find a Juvenile Idiopathic Arthritis (JIA) doctor in any of the 10 largest U.S. cities by clicking below:

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    How does MediFind rank Juvenile Idiopathic Arthritis (JIA) doctors in Japan?

    MediFind’s rankings are based on a variety of data sources, such as the number of articles a doctor has published in medical journals, participation in clinical trials and industry conferences, as well as the number of patients that provider sees for a given condition. Note that MediFind’s provider database is not based on user reviews, and providers do not pay to be included in the database. 

    What types of insurance are accepted by Juvenile Idiopathic Arthritis (JIA) doctors in Japan?

    Most profiles in MediFind’s doctor database include a list of insurance plans accepted by that provider. However, it’s a good idea to contact the provider’s office to make sure they still accept your insurance, then doublecheck by contacting your insurance plan to confirm they’re in network. 

    How can I book an appointment online with a Juvenile Idiopathic Arthritis (JIA) doctor in Japan?

    MediFind offers direct scheduling for certain providers using the “Request Appointment” button on that provider’s profile. If the schedule option is not available for a provider, tap the red “Show Phone Number” button on their profile to get their contact information. If you prefer to find providers who offer online scheduling, select “Schedules online” under the “Availability” category of the filter feature on the left side of the Juvenile Idiopathic Arthritis (JIA) doctor search results page. 

    Why is it important to get a second opinion from a different Juvenile Idiopathic Arthritis (JIA) doctor?

    Second opinions are an opportunity to confirm a diagnosis and its root cause, learn about alternative treatment options, or simply gain peace of mind. Many people, especially those with serious diagnoses, get second opinions so they can understand all their options and make informed decisions, so don’t hesitate to get one if you have any doubts or need more information or clarification regarding your care. Note that some insurance plans require second opinions, while others don’t cover second opinions, so be sure to confirm with your insurance provider first.   

    How can I prepare for my appointment with a Juvenile Idiopathic Arthritis (JIA) doctor in Japan?

    Prepare for your appointment by gathering the following items: 

    • Copies of medical records (dating back at least one year) 
    • Your medical history, including illnesses, medical conditions, surgeries, and other doctors you see 
    • Family history of disease 
    • List of current prescription drugs, over-the-counter medicines, vitamins, and herbal remedies or supplements including names and doses 
    • Allergies to medications, food, latex, insects, etc.  
    • List of questions and concerns 
    • Your insurance card 

    You might also contact the provider’s office to see if they offer transportation or childcare services or if you’re allowed to bring a loved one for support or to take notes during your visit. 

    What questions should I ask my Juvenile Idiopathic Arthritis (JIA) doctor?

    Here are some sample questions: 

    • Can you explain in simple terms what this condition is and how it’s treated? 
    • What symptoms or side effects should I watch for? 
    • What tests will be involved, and when can I expect results? 
    • Are there other specialists I need to see? 
    • What’s the best way to reach you if I have follow-up questions? 

    How can I learn about the latest clinical trials and research advances my Juvenile Idiopathic Arthritis (JIA) doctor may know about?

    MediFind’s Clinical Trials tool asks you a series of questions to help you narrow down your search by health condition, age, gender, location, how far you’re willing to travel, and more. Each question you answer filters down the number of trials until you find the ones that are most relevant to you. 

    MediFind’s Latest Advances tool features summaries of recent articles published in medical journals. We use cutting-edge technology to scour medical publication databases for the latest research advancements on any given condition, then we simplify this information in a way that’s useful and easy to understand. 

    Can I filter my search to show male or female Juvenile Idiopathic Arthritis (JIA) doctors in Japan?

    Look for the filter feature on the left side of the Juvenile Idiopathic Arthritis (JIA) doctor search results page. Select “Female” or “Male” under the “Gender” category to search for female or male providers exclusively. If the “Any” option is selected, it will pull results for both male and female providers. 

    Can I filter my search to find a Juvenile Idiopathic Arthritis (JIA) doctor that offers video calls?

    Look for the filter feature on the left-side of the Juvenile Idiopathic Arthritis (JIA) doctor search results page. Select “Offers telehealth visits” under the Availability category to search for providers who offer virtual appointments (video calls). 

    Reviewed on: 11/11/24  

    By: MediFind Medical Staff 

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