The 20 Best Irregular Sleep-Wake Syndrome Doctors in Japan

Find the Top Irregular Sleep-Wake Syndrome Experts and Specialists

Last Updated: 06/30/2026

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MediFind found 19 doctor with experience in Irregular Sleep-Wake Syndrome near Japan. Of these, 17 are Advanced, 1 are Distinguished and 1 are Experienced.

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19 providers found
    Distinguished in Irregular Sleep-Wake Syndrome

    Yasutoshi Koga
    Distinguished in Irregular Sleep-Wake Syndrome

    Yasutoshi Koga
    Referral may be required
    Kurume, JP 

    Yasutoshi Koga practices practicing medicine in Kurume, Japan. Koga is rated as a Distinguished expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. They are also highly rated in 6 other conditions, according to our data. Their clinical expertise encompasses MELAS Syndrome, Irregular Sleep-Wake Syndrome, Lactic Acidosis, Precocious Puberty, and Stent Placement.

    Advanced in Irregular Sleep-Wake Syndrome

    Hiroki Ikeda
    Advanced in Irregular Sleep-Wake Syndrome

    Hiroki Ikeda
    Referral may be required
    Kawasaki, JP 

    Hiroki Ikeda practices practicing medicine in Kawasaki, Japan. Mr. Ikeda is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Irregular Sleep-Wake Syndrome, ADULT Syndrome, Hypertension, and Abdominal Obesity Metabolic Syndrome.

    Advanced in Irregular Sleep-Wake Syndrome

    Takeshi Matsumoto
    Advanced in Irregular Sleep-Wake Syndrome

    Takeshi Matsumoto
    Referral may be required
    Kyoto, JP 

    Takeshi Matsumoto practices practicing medicine in Kyoto, Japan. Mr. Matsumoto is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. He is also highly rated in 23 other conditions, according to our data. His clinical expertise encompasses Disseminated Intravascular Coagulation, Blood Clots, Protein C Deficiency, Hepato-Pancreato-Biliary Surgery, and Pancreaticoduodenectomy.

    Learn about our expert tiers
    Advanced in Irregular Sleep-Wake Syndrome

    Takeo Nakayama
    Advanced in Irregular Sleep-Wake Syndrome

    Takeo Nakayama
    Referral may be required
    Kyoto, JP 

    Takeo Nakayama practices practicing medicine in Kyoto, Japan. Mr. Nakayama is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Hypertension, Premenstrual Syndrome, Irregular Sleep-Wake Syndrome, Endoscopy, and Myringotomy.

    Advanced in Irregular Sleep-Wake Syndrome

    Akihiro Sekine
    Advanced in Irregular Sleep-Wake Syndrome

    Akihiro Sekine
    Referral may be required
    St. Marianna University School Of Medicine, 2-16-1 Sugao, Miyamae Ku, 
    Kawasaki, JP 

    Akihiro Sekine practices practicing medicine in Kawasaki, Japan. Mr. Sekine is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Cholecystitis, Gallbladder Disease, Mallory-Weiss Syndrome, Stent Placement, and Endoscopy.

    Advanced in Irregular Sleep-Wake Syndrome

    Fumihiko Matsuda
    Advanced in Irregular Sleep-Wake Syndrome

    Fumihiko Matsuda
    Referral may be required
    Kyoto, JP 

    Fumihiko Matsuda practices practicing medicine in Kyoto, Japan. Matsuda is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. They are also highly rated in 10 other conditions, according to our data. Their clinical expertise encompasses Arthritis, Takayasu Arteritis, Rheumatoid Arthritis (RA), and Nearsightedness.

    Advanced in Irregular Sleep-Wake Syndrome

    Ryo Yamada
    Advanced in Irregular Sleep-Wake Syndrome

    Ryo Yamada
    Referral may be required
    Yokohama, JP 

    Ryo Yamada practices practicing medicine in Yokohama, Japan. Mr. Yamada is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Rheumatoid Arthritis (RA), Arthritis, Irregular Sleep-Wake Syndrome, and Central Serous Chorioretinopathy.

    Advanced in Irregular Sleep-Wake Syndrome

    Hiroshi Kadotani
    Advanced in Irregular Sleep-Wake Syndrome

    Hiroshi Kadotani
    Referral may be required
    Otsu, JP 

    Hiroshi Kadotani practices practicing medicine in Otsu, Japan. Mr. Kadotani is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Insomnia, Obstructive Sleep Apnea, Irregular Sleep-Wake Syndrome, and Metabolic Syndrome.

    Advanced in Irregular Sleep-Wake Syndrome

    Kazuo L. Chin
    Advanced in Irregular Sleep-Wake Syndrome

    Kazuo L. Chin
    Referral may be required
    Kyoto, JP 

    Kazuo Chin practices practicing medicine in Kyoto, Japan. Mr. Chin is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Obstructive Sleep Apnea, Cerebral Hypoxia, Obesity Hypoventilation Syndrome (OHS), Lung Transplant, and Osteotomy.

    Advanced in Irregular Sleep-Wake Syndrome

    Yoshimitsu Takahashi
    Advanced in Irregular Sleep-Wake Syndrome

    Yoshimitsu Takahashi
    Referral may be required
    Kyoto, JP 

    Yoshimitsu Takahashi practices practicing medicine in Kyoto, Japan. Takahashi is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. They are also highly rated in 2 other conditions, according to our data. Their clinical expertise encompasses Premenstrual Syndrome, Irregular Sleep-Wake Syndrome, Hypertension, and Menopause.

    Advanced in Irregular Sleep-Wake Syndrome

    Shigeo Muro
    Advanced in Irregular Sleep-Wake Syndrome

    Shigeo Muro
    Referral may be required
    Nara-shi, JP 

    Shigeo Muro practices practicing medicine in Nara-shi, Japan. Mr. Muro is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Chronic Obstructive Pulmonary Disease (COPD), Emphysema, Acute Interstitial Pneumonia, Endoscopy, and Ileostomy.

    Advanced in Irregular Sleep-Wake Syndrome

    Michiaki Mishima
    Advanced in Irregular Sleep-Wake Syndrome

    Michiaki Mishima
    Referral may be required
    Noe, JP 

    Michiaki Mishima practices practicing medicine in Noe, Japan. Mishima is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. They are also highly rated in 17 other conditions, according to our data. Their clinical expertise encompasses Obstructive Sleep Apnea, Chronic Obstructive Pulmonary Disease (COPD), Mycobacterium Avium Complex Infections, Endoscopy, and Lung Transplant.

    Advanced in Irregular Sleep-Wake Syndrome

    Kimihiko Murase
    Advanced in Irregular Sleep-Wake Syndrome

    Kimihiko Murase
    Referral may be required
    Kawahara, JP 

    Kimihiko Murase practices practicing medicine in Kawahara, Japan. Murase is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. They are also highly rated in 4 other conditions, according to our data. Their clinical expertise encompasses Obstructive Sleep Apnea, Obesity, Cerebral Hypoxia, Irregular Sleep-Wake Syndrome, and Lung Transplant.

    Advanced in Irregular Sleep-Wake Syndrome

    Shinji Kosugi
    Advanced in Irregular Sleep-Wake Syndrome

    Shinji Kosugi
    Referral may be required
    Genetic Counsellor Course, 
    Kyoto, JP 

    Shinji Kosugi practices practicing medicine in Kyoto, Japan. Mr. Kosugi is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Irregular Sleep-Wake Syndrome, Retinopathy Pigmentary Mental Retardation, Thanatophoric Dysplasia, Multiple Endocrine Neoplasia, and Salpingo-Oophorectomy.

    Advanced in Irregular Sleep-Wake Syndrome

    Yasuharu Tabara
    Advanced in Irregular Sleep-Wake Syndrome

    Yasuharu Tabara
    Referral may be required
    Kyoto, JP 

    Yasuharu Tabara practices practicing medicine in Kyoto, Japan. Tabara is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. They are also highly rated in 8 other conditions, according to our data. Their clinical expertise encompasses Hypertension, Muscle Atrophy, Type 2 Diabetes (T2D), and Obesity.

    Advanced in Irregular Sleep-Wake Syndrome

    Tomohide Kubo
    Advanced in Irregular Sleep-Wake Syndrome

    Tomohide Kubo
    Referral may be required
    Kawasaki, JP 

    Tomohide Kubo practices practicing medicine in Kawasaki, Japan. Kubo is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Irregular Sleep-Wake Syndrome and ADULT Syndrome.

    Advanced in Irregular Sleep-Wake Syndrome

    Kazuya Setoh
    Advanced in Irregular Sleep-Wake Syndrome

    Kazuya Setoh
    Referral may be required
    Kawahara, JP 

    Kazuya Setoh practices practicing medicine in Kawahara, Japan. Mr. Setoh is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Irregular Sleep-Wake Syndrome, Hypertension, Lordosis, and Muscle Atrophy.

    Advanced in Irregular Sleep-Wake Syndrome

    Takahisa Kawaguchi
    Advanced in Irregular Sleep-Wake Syndrome

    Takahisa Kawaguchi
    Referral may be required
    Kyoto, JP 

    Takahisa Kawaguchi practices practicing medicine in Kyoto, Japan. Kawaguchi is rated as an Advanced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Irregular Sleep-Wake Syndrome, Hypertension, IgG4-Related Disease, and Minimal Change Disease.

    Kazuo Mishima

    Kazuo Mishima
    Referral may be required
    Akita, JP 

    Kazuo Mishima practices practicing medicine in Akita, Japan. Mr. Mishima is rated as an Experienced expert by MediFind in the treatment of Irregular Sleep-Wake Syndrome. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Excessive Daytime Sleepiness, Idiopathic Hypersomnia, Drowsiness, and Insomnia.

    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 1-19 of 19

    Last Updated: 06/30/2026

    What is the definition of Irregular Sleep-Wake Syndrome?

    Irregular sleep-wake syndrome is sleeping without any real schedule.

    When should I see an Irregular Sleep-Wake Syndrome 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 an Irregular Sleep-Wake Syndrome 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 Irregular Sleep-Wake Syndrome doctor in Japan?

    You can find an Irregular Sleep-Wake Syndrome doctor in any of the 10 largest U.S. cities by clicking below:

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    How does MediFind rank Irregular Sleep-Wake Syndrome 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 Irregular Sleep-Wake Syndrome 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 an Irregular Sleep-Wake Syndrome 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 Irregular Sleep-Wake Syndrome doctor search results page. 

    Why is it important to get a second opinion from a different Irregular Sleep-Wake Syndrome 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 an Irregular Sleep-Wake Syndrome 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 Irregular Sleep-Wake Syndrome 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 Irregular Sleep-Wake Syndrome 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 Irregular Sleep-Wake Syndrome doctors in Japan?

    Look for the filter feature on the left side of the Irregular Sleep-Wake Syndrome 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 an Irregular Sleep-Wake Syndrome doctor that offers video calls?

    Look for the filter feature on the left-side of the Irregular Sleep-Wake Syndrome 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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