The 20 Best Excessive Daytime Sleepiness Doctors in Japan

Find the Top Excessive Daytime Sleepiness Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 281 doctor with experience in Excessive Daytime Sleepiness near Japan. Of these, 227 are Experienced, 44 are Advanced, 8 are Distinguished and 2 are Elite.

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281 providers found
    Elite in Excessive Daytime Sleepiness

    Katsushi Tokunaga
    Elite in Excessive Daytime Sleepiness

    Katsushi Tokunaga
    Tokyo, JP 

    Katsushi Tokunaga practices practicing medicine in Tokyo, Japan. Tokunaga is rated as an Elite expert by MediFind in the treatment of Excessive Daytime Sleepiness. They are also highly rated in 18 other conditions, according to our data. Their clinical expertise encompasses Stevens-Johnson Syndrome, Erythema Multiforme, Excessive Daytime Sleepiness, and Narcolepsy.

    Elite in Excessive Daytime Sleepiness

    Kazuo Mishima
    Elite in Excessive Daytime Sleepiness

    Kazuo Mishima
    Akita, JP 

    Kazuo Mishima practices practicing medicine in Akita, Japan. Mr. Mishima is rated as an Elite expert by MediFind in the treatment of Excessive Daytime Sleepiness. 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.

    Distinguished in Excessive Daytime Sleepiness

    Takeshi Sakurai
    Distinguished in Excessive Daytime Sleepiness

    Takeshi Sakurai
    Tsukuba, JP 

    Takeshi Sakurai practices practicing medicine in Tsukuba, Japan. Mr. Sakurai is rated as a Distinguished expert by MediFind in the treatment of Excessive Daytime Sleepiness. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Narcolepsy, Drowsiness, Excessive Daytime Sleepiness, and Schizophrenia.

    Learn about our expert tiers
    Distinguished in Excessive Daytime Sleepiness

    Masaya Honda
    Distinguished in Excessive Daytime Sleepiness

    Masaya Honda
    Ube, JP 

    Masaya Honda practices practicing medicine in Ube, Japan. Mr. Honda is rated as a Distinguished expert by MediFind in the treatment of Excessive Daytime Sleepiness. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Excessive Daytime Sleepiness, Drowsiness, Narcolepsy, Idiopathic Hypersomnia, and Thymectomy.

    Distinguished in Excessive Daytime Sleepiness

    Yuichi Inoue
    Distinguished in Excessive Daytime Sleepiness

    Yuichi Inoue
    Tokyo, JP 

    Yuichi Inoue practices practicing medicine in Tokyo, Japan. Inoue is rated as a Distinguished expert by MediFind in the treatment of Excessive Daytime Sleepiness. They are also highly rated in 13 other conditions, according to our data. Their clinical expertise encompasses Restless Legs Syndrome, Excessive Daytime Sleepiness, Drowsiness, and Insomnia.

    Distinguished in Excessive Daytime Sleepiness

    Keisuke Suzuki
    Distinguished in Excessive Daytime Sleepiness

    Keisuke Suzuki
    Tokyo, JP 

    Keisuke Suzuki practices practicing medicine in Tokyo, Japan. Mr. Suzuki is rated as a Distinguished expert by MediFind in the treatment of Excessive Daytime Sleepiness. He is also highly rated in 30 other conditions, according to our data. His clinical expertise encompasses Restless Legs Syndrome, Spinal and Bulbar Muscular Atrophy, Migraine, Gastrostomy, and Orchiectomy.

    Distinguished in Excessive Daytime Sleepiness

    Takashi Kanbayashi
    Distinguished in Excessive Daytime Sleepiness

    Takashi Kanbayashi
    Tsukuba, JP 

    Takashi Kanbayashi practices practicing medicine in Tsukuba, Japan. Mr. Kanbayashi is rated as a Distinguished expert by MediFind in the treatment of Excessive Daytime Sleepiness. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Drowsiness, Narcolepsy, Idiopathic Hypersomnia, and Excessive Daytime Sleepiness.

    Distinguished in Excessive Daytime Sleepiness

    Taku Miyagawa
    Distinguished in Excessive Daytime Sleepiness

    Taku Miyagawa
    Tokyo, JP 

    Taku Miyagawa practices practicing medicine in Tokyo, Japan. Mr. Miyagawa is rated as a Distinguished expert by MediFind in the treatment of Excessive Daytime Sleepiness. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Drowsiness, Narcolepsy, Excessive Daytime Sleepiness, and Idiopathic Hypersomnia.

    Distinguished in Excessive Daytime Sleepiness

    Makoto Honda
    Distinguished in Excessive Daytime Sleepiness

    Makoto Honda
    Tokyo, JP 

    Makoto Honda practices practicing medicine in Tokyo, Japan. Mr. Honda is rated as a Distinguished expert by MediFind in the treatment of Excessive Daytime Sleepiness. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Drowsiness, Narcolepsy, Excessive Daytime Sleepiness, and Idiopathic Hypersomnia.

    Distinguished in Excessive Daytime Sleepiness

    Koichi Hirata
    Distinguished in Excessive Daytime Sleepiness

    Koichi Hirata
    Mibu, JP 

    Koichi Hirata practices practicing medicine in Mibu, Japan. Mr. Hirata is rated as a Distinguished expert by MediFind in the treatment of Excessive Daytime Sleepiness. He is also highly rated in 34 other conditions, according to our data. His clinical expertise encompasses Restless Legs Syndrome, Migraine, Headache, Hepato-Pancreato-Biliary Surgery, and Pancreaticoduodenectomy.

    Advanced in Excessive Daytime Sleepiness

    Masayuki Miyamoto
    Advanced in Excessive Daytime Sleepiness

    Masayuki Miyamoto
    Tochigi, JP 

    Masayuki Miyamoto practices practicing medicine in Tochigi, Japan. Mr. Miyamoto is rated as an Advanced expert by MediFind in the treatment of Excessive Daytime Sleepiness. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Restless Legs Syndrome, REM Behavior Disorder, Excessive Daytime Sleepiness, and Lewy Body Dementia (LBD).

    Advanced in Excessive Daytime Sleepiness

    Aya Imanishi
    Advanced in Excessive Daytime Sleepiness

    Aya Imanishi
    Akita, JP 

    Aya Imanishi practices practicing medicine in Akita, Japan. Ms. Imanishi is rated as an Advanced expert by MediFind in the treatment of Excessive Daytime Sleepiness. She is also highly rated in 5 other conditions, according to our data. Her clinical expertise encompasses Drowsiness, Narcolepsy, Idiopathic Hypersomnia, and Excessive Daytime Sleepiness.

    Advanced in Excessive Daytime Sleepiness

    Naohisa Uchimura
    Advanced in Excessive Daytime Sleepiness

    Naohisa Uchimura
    Kurume, JP 

    Naohisa Uchimura practices practicing medicine in Kurume, Japan. Uchimura is rated as an Advanced expert by MediFind in the treatment of Excessive Daytime Sleepiness. They are also highly rated in 5 other conditions, according to our data. Their clinical expertise encompasses Insomnia, Excessive Daytime Sleepiness, Restless Legs Syndrome, and Drowsiness.

    Advanced in Excessive Daytime Sleepiness

    Tetsuo Shimizu
    Advanced in Excessive Daytime Sleepiness

    Tetsuo Shimizu
    Itabashi, JP 

    Tetsuo Shimizu practices practicing medicine in Itabashi, Japan. Mr. Shimizu is rated as an Advanced expert by MediFind in the treatment of Excessive Daytime Sleepiness. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Drowsiness, Excessive Daytime Sleepiness, Narcolepsy, and Lung Cancer.

    Advanced in Excessive Daytime Sleepiness

    Michihiro Mieda
    Advanced in Excessive Daytime Sleepiness

    Michihiro Mieda
    Kanazawa, JP 

    Michihiro Mieda practices practicing medicine in Kanazawa, Japan. Mieda is rated as an Advanced expert by MediFind in the treatment of Excessive Daytime Sleepiness. They are also highly rated in 3 other conditions, according to our data. Their clinical expertise encompasses Excessive Daytime Sleepiness, Narcolepsy, and Drowsiness.

    Advanced in Excessive Daytime Sleepiness

    Mihoko Shimada
    Advanced in Excessive Daytime Sleepiness

    Mihoko Shimada
    Tokyo, JP 

    Mihoko Shimada practices practicing medicine in Tokyo, Japan. Shimada is rated as an Advanced expert by MediFind in the treatment of Excessive Daytime Sleepiness. They are also highly rated in 4 other conditions, according to our data. Their clinical expertise encompasses Drowsiness, Narcolepsy, Excessive Daytime Sleepiness, and Idiopathic Hypersomnia.

    Advanced in Excessive Daytime Sleepiness

    Taeko Sakuma-Sasai
    Advanced in Excessive Daytime Sleepiness

    Taeko Sakuma-Sasai
    Tokyo, JP 

    Taeko Sakuma-Sasai practices practicing medicine in Tokyo, Japan. Ms. Sakuma-Sasai is rated as an Advanced expert by MediFind in the treatment of Excessive Daytime Sleepiness. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Excessive Daytime Sleepiness, Restless Legs Syndrome, Idiopathic Hypersomnia, and Drowsiness.

    Advanced in Excessive Daytime Sleepiness

    Nobutaka Hattori
    Advanced in Excessive Daytime Sleepiness

    Nobutaka Hattori
    Tokyo, JP 

    Nobutaka Hattori practices practicing medicine in Tokyo, Japan. Hattori is rated as an Advanced expert by MediFind in the treatment of Excessive Daytime Sleepiness. They are also highly rated in 52 other conditions, according to our data. Their clinical expertise encompasses Parkinson's Disease, Movement Disorders, Drug Induced Dyskinesia, Deep Brain Stimulation, and Thymectomy.

    Advanced in Excessive Daytime Sleepiness

    Hiroto Kojima
    Advanced in Excessive Daytime Sleepiness

    Hiroto Kojima
    Kyoto, JP 

    Hiroto Kojima practices practicing medicine in Kyoto, Japan. Mr. Kojima is rated as an Advanced expert by MediFind in the treatment of Excessive Daytime Sleepiness. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Excessive Daytime Sleepiness, Drowsiness, Narcolepsy, Idiopathic Hypersomnia, and Bone Marrow Transplant.

    Advanced in Excessive Daytime Sleepiness

    Hiromi Toyoda
    Advanced in Excessive Daytime Sleepiness

    Hiromi Toyoda
    Tokyo, JP 

    Hiromi Toyoda practices practicing medicine in Tokyo, Japan. Toyoda is rated as an Advanced expert by MediFind in the treatment of Excessive Daytime Sleepiness. They are also highly rated in 3 other conditions, according to our data. Their clinical expertise encompasses Drowsiness, Narcolepsy, Excessive Daytime Sleepiness, and Idiopathic Hypersomnia.

    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 281

    Last Updated: 04/28/2026

    What is the definition of Excessive Daytime Sleepiness?

    Excessive daytime sleepiness (EDS) is defined as feeling sleepy or having difficulty staying awake or alert during the day combined with an extreme desire to sleep that occurs nearly every day for at least three months. Excessive daytime sleepiness may be caused by a sleep disorder, such as insomnia, obstructive sleep apnea, or narcolepsy; restless leg syndrome; periodic limb movement disorder; circadian rhythm disorders; mental health disorders, such as depression, anxiety, or schizophrenia; Parkinson’s disease; cancer; chronic pain; or other conditions, such as epilepsy; obesity; substance abuse; multiple sclerosis; voluntary or chronic sleep deprivation; an inherited genetic predisposition; smoking; lack of exercise; or the use of medications, such as melatonin and sleeping pills. Excessive daytime sleepiness can be a dangerous condition that has contributed to serious accidents and major catastrophes.

    Which doctors treat excessive daytime sleepiness?   

    • Primary Care Physicians (PCP) are doctors who serve as the primary point of care. They help patients manage their overall health and can refer them to the right specialist as needed. 
    • Neurologists are brain doctors who treat excessive daytime sleepiness if it’s related to neurological disorders like narcolepsy, a condition that causes sudden attacks of sleep, or central sleep apnea, which happens when the brain doesn’t send proper signals to the muscles that control breathing.  

    What causes Excessive Daytime Sleepiness?  

    Excessive daytime sleepiness – also called hypersomnia – can be caused by different things, including sleep disorders such as obstructive sleep apnea, central sleep apnea, narcolepsy, or insomnia. It can happen if someone doesn’t get enough sleep, has poor-quality sleep, or has a health condition such as chronic fatigue syndrome or major depression. It can also be a side effect of certain medications.   

    What are the symptoms of excessive daytime sleepiness?  

    Signs or symptoms vary from person to person. They can include: 

    • Being very sleepy even after getting enough sleep 
    • Trouble staying awake while working, studying, or watching TV 
    • Nodding off during situations when staying awake is important 
    • Finding it hard to focus on tasks or pay attention 
    • Feeling grumpy or experiencing sudden mood swings 

    How is excessive daytime sleepiness treated?  

    The treatment for excessive daytime sleepiness depends on what’s causing it. A doctor will create a treatment plan based on what each person needs. Treatment options include:  

    • Addressing any underlying sleep disorders 
    • Using medications to help stay awake 

    What is the difference between fatigue and excessive daytime sleepiness?

    Fatigue is when someone feels extremely tired or has no energy. Excessive daytime sleepiness means a person is having a hard time staying awake during the day even after getting enough sleep. Fatigue can be both mental and physical, but excessive daytime sleepiness is specifically related to falling asleep or feeling very sleepy during the day.

    When should I see an Excessive Daytime Sleepiness 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 Excessive Daytime Sleepiness 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 Excessive Daytime Sleepiness doctor in Japan?

    You can find an Excessive Daytime Sleepiness doctor in any of the 10 largest U.S. cities by clicking below:

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    How does MediFind rank Excessive Daytime Sleepiness 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 Excessive Daytime Sleepiness 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 Excessive Daytime Sleepiness 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 Excessive Daytime Sleepiness doctor search results page. 

    Why is it important to get a second opinion from a different Excessive Daytime Sleepiness 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 Excessive Daytime Sleepiness 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 Excessive Daytime Sleepiness 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 Excessive Daytime Sleepiness 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 Excessive Daytime Sleepiness doctors in Japan?

    Look for the filter feature on the left side of the Excessive Daytime Sleepiness 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 Excessive Daytime Sleepiness doctor that offers video calls?

    Look for the filter feature on the left-side of the Excessive Daytime Sleepiness 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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