The 20 Best Chromosome 21q Deletion Doctors in Japan

Find the Top Chromosome 21q Deletion Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 15 doctor with experience in Chromosome 21q Deletion near Japan. Of these, 15 are Advanced.

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15 providers found
    Advanced in Chromosome 21q Deletion

    Kota L. Watanabe
    Advanced in Chromosome 21q Deletion

    Kota L. Watanabe
    Tokyo, JP 

    Kota Watanabe practices practicing medicine in Tokyo, Japan. Mr. Watanabe is rated as an Advanced expert by MediFind in the treatment of Chromosome 21q Deletion. He is also highly rated in 41 other conditions, according to our data. His clinical expertise encompasses Spinal Tumor, Adolescent Idiopathic Scoliosis, Ankylosing Vertebral Hyperostosis with Tylosis, Spinal Fusion, and Laminectomy.

    Advanced in Chromosome 21q Deletion

    Narumi Uno
    Advanced in Chromosome 21q Deletion

    Narumi Uno
    Tokyo, JP 

    Narumi Uno practices practicing medicine in Tokyo, Japan. Ms. Uno is rated as an Advanced expert by MediFind in the treatment of Chromosome 21q Deletion. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Chromosome 21q Deletion, Triple X Syndrome, Chromosome 8p Deletion, and Mosaic Trisomy 8.

    Advanced in Chromosome 21q Deletion

    Kazuyoshi Hosomichi
    Advanced in Chromosome 21q Deletion

    Kazuyoshi Hosomichi
    Hachioji, JP 

    Kazuyoshi Hosomichi practices practicing medicine in Hachioji, Japan. Mr. Hosomichi is rated as an Advanced expert by MediFind in the treatment of Chromosome 21q Deletion. He is also highly rated in 8 other conditions, according to our data. His clinical expertise encompasses Aplastic Anemia, Anemia, Craniofacial-Deafness-Hand Syndrome, Cowden Syndrome, and Osteotomy.

    Learn about our expert tiers
    Advanced in Chromosome 21q Deletion

    Teruhiko Suzuki
    Advanced in Chromosome 21q Deletion

    Teruhiko Suzuki
    Setagaya, JP 

    Teruhiko Suzuki practices practicing medicine in Setagaya, Japan. Suzuki is rated as an Advanced expert by MediFind in the treatment of Chromosome 21q Deletion. They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Chromosome 21q Deletion, Triple X Syndrome, and Klinefelter Syndrome.

    Advanced in Chromosome 21q Deletion

    Hiroyuki Fujiwara
    Advanced in Chromosome 21q Deletion

    Hiroyuki Fujiwara
    Shimotsuke, JP 

    Hiroyuki Fujiwara practices practicing medicine in Shimotsuke, Japan. Mr. Fujiwara is rated as an Advanced expert by MediFind in the treatment of Chromosome 21q Deletion. He is also highly rated in 8 other conditions, according to our data. His clinical expertise encompasses Ovarian Cancer, Endometrial Cancer, Cervical Cancer, Hysterectomy, and Salpingo-Oophorectomy.

    Advanced in Chromosome 21q Deletion

    Manabu Ogoyama
    Advanced in Chromosome 21q Deletion

    Manabu Ogoyama
    Tochigi, JP 

    Manabu Ogoyama practices practicing medicine in Tochigi, Japan. Mr. Ogoyama is rated as an Advanced expert by MediFind in the treatment of Chromosome 21q Deletion. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Placenta Previa, HELLP Syndrome, Preeclampsia, Liver Embolization, and Hysterectomy.

    Advanced in Chromosome 21q Deletion

    Yasuhiro Kazuki
    Advanced in Chromosome 21q Deletion

    Yasuhiro Kazuki
    Okazaki, JP 

    Yasuhiro Kazuki practices practicing medicine in Okazaki, Japan. Mr. Kazuki is rated as an Advanced expert by MediFind in the treatment of Chromosome 21q Deletion. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Mosaic Trisomy 8, Chromosome 8p Deletion, Down Syndrome, and Leukemoid Reaction.

    Advanced in Chromosome 21q Deletion

    Kyotaro Yamazaki
    Advanced in Chromosome 21q Deletion

    Kyotaro Yamazaki
    Okazaki, JP 

    Kyotaro Yamazaki practices practicing medicine in Okazaki, Japan. Yamazaki is rated as an Advanced expert by MediFind in the treatment of Chromosome 21q Deletion. They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Chromosome 21q Deletion, Triple X Syndrome, and Klinefelter Syndrome.

    Advanced in Chromosome 21q Deletion

    Hironori Takahashi
    Advanced in Chromosome 21q Deletion

    Hironori Takahashi
    Tochigi, JP 

    Hironori Takahashi practices practicing medicine in Tochigi, Japan. Takahashi is rated as an Advanced expert by MediFind in the treatment of Chromosome 21q Deletion. They are also highly rated in 11 other conditions, according to our data. Their clinical expertise encompasses Placenta Previa, Neonatal Hemochromatosis, HELLP Syndrome, Liver Embolization, and Hysterectomy.

    Advanced in Chromosome 21q Deletion

    Mitsuhiko Osaki-Oshimura
    Advanced in Chromosome 21q Deletion

    Mitsuhiko Osaki-Oshimura
    Yonago, JP 

    Mitsuhiko Osaki-Oshimura practices practicing medicine in Yonago, Japan. Osaki-Oshimura is rated as an Advanced expert by MediFind in the treatment of Chromosome 21q Deletion. They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Chromosome 21q Deletion, Mosaic Trisomy 8, Chromosome 8p Deletion, and Triple X Syndrome.

    Advanced in Chromosome 21q Deletion

    Kazuma Tomizuka
    Advanced in Chromosome 21q Deletion

    Kazuma Tomizuka
    Tokyo, JP 

    Kazuma Tomizuka practices practicing medicine in Tokyo, Japan. Mr. Tomizuka is rated as an Advanced expert by MediFind in the treatment of Chromosome 21q Deletion. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Chromosome 21q Deletion, Triple X Syndrome, and Klinefelter Syndrome.

    Advanced in Chromosome 21q Deletion

    Rina Komazaki
    Advanced in Chromosome 21q Deletion

    Rina Komazaki
    Tokyo, JP 

    Rina Komazaki practices practicing medicine in Tokyo, Japan. Ms. Komazaki is rated as an Advanced expert by MediFind in the treatment of Chromosome 21q Deletion. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Chromosome 21q Deletion, Periodontitis, and Non-Alcoholic Fatty Liver Disease.

    Advanced in Chromosome 21q Deletion

    Risa Narumi
    Advanced in Chromosome 21q Deletion

    Risa Narumi
    Tochigi, JP 

    Risa Narumi practices practicing medicine in Tochigi, Japan. Ms. Narumi is rated as an Advanced expert by MediFind in the treatment of Chromosome 21q Deletion. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Chromosome 21q Deletion, Ectopic Pregnancy, Preeclampsia, and Intrauterine Device Insertion.

    Advanced in Chromosome 21q Deletion

    Kenji Horie
    Advanced in Chromosome 21q Deletion

    Kenji Horie
    Shonan Village, 
    Hayama, JP 

    Kenji Horie practices practicing medicine in Hayama, Japan. Mr. Horie is rated as an Advanced expert by MediFind in the treatment of Chromosome 21q Deletion. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Baller-Gerold Syndrome, Rapadilino Syndrome, Placenta Previa, Liver Embolization, and Gastrostomy.

    Advanced in Chromosome 21q Deletion

    Yasunori Aizawa
    Advanced in Chromosome 21q Deletion

    Yasunori Aizawa
    Yokohama, JP 

    Yasunori Aizawa practices practicing medicine in Yokohama, Japan. Aizawa is rated as an Advanced expert by MediFind in the treatment of Chromosome 21q Deletion. They are also highly rated in 1 other condition, according to our data. Their clinical expertise encompasses Chromosome 21q Deletion.

    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 1-15 of 15

    Last Updated: 04/28/2026

    What is the definition of Chromosome 21q Deletion?

    Chromosome 21q deletion is a chromosome abnormality that occurs when there is a missing copy of the genetic material located on the long arm (q) of chromosome 21. The severity of the condition and the signs and symptoms depend on the size and location of the deletion and which genes are involved. Features that often occur in people with Chromosome 21q deletion include developmental delay, intellectual disability, behavioral problems, and distinctive facial features. Most cases are not inherited, but people can pass the deletion on to their children.

    When should I see a Chromosome 21q Deletion 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 Chromosome 21q Deletion 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 Chromosome 21q Deletion doctor in Japan?

    You can find a Chromosome 21q Deletion doctor in any of the 10 largest U.S. cities by clicking below:

    Chromosome 21q Deletion doctor near New York, NY
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    Chromosome 21q Deletion doctor near Philadelphia, PA
    Chromosome 21q Deletion doctor near Atlanta, GA
    Chromosome 21q Deletion doctor near Boston, MA
    Chromosome 21q Deletion doctor near Dallas, TX
    Chromosome 21q Deletion doctor near San Jose, CA

    How does MediFind rank Chromosome 21q Deletion 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 Chromosome 21q Deletion 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 Chromosome 21q Deletion 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 Chromosome 21q Deletion doctor search results page. 

    Why is it important to get a second opinion from a different Chromosome 21q Deletion 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 Chromosome 21q Deletion 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 Chromosome 21q Deletion 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 Chromosome 21q Deletion 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 Chromosome 21q Deletion doctors in Japan?

    Look for the filter feature on the left side of the Chromosome 21q Deletion 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 Chromosome 21q Deletion doctor that offers video calls?

    Look for the filter feature on the left-side of the Chromosome 21q Deletion 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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