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Charlotte Jane Sumner

Charlotte Jane Sumner, MD

Neuromuscular Medicine

Accepting New Patients

Highlights

Age Groups Seen

  • Infant 0-2
  • Child 3-12
  • Adolescent 13-17
  • Young Adult 18-25
  • Adult 26-64
  • Older Adult 65+

Languages

  • English

Gender

Female

Johns Hopkins Affiliations:

  • Johns Hopkins School of Medicine Faculty

About Charlotte Jane Sumner

Primary Academic Title

Professor of Neurology

Johns Hopkins Physician

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Background

Dr. Charlotte Sumner is a Professor of Neurology and Neuroscience at Johns Hopkins University School of Medicine. Dr. Sumner cares for patients with genetically-mediated neuromuscular diseases. Her practice is notable for a focus on individuals with inherited neuromuscular disorders of peripheral nerves and motor neurons, including spinal muscular atrophy (SMA) and Charcot-Marie-Tooth (CMT) disease. She co-directs the Johns Hopkins Muscular Dystrophy Association Care Center, the Spinal Muscular Atrophy (SMA), and the Charcot-Marie-Tooth (CMT) clinics, which deliver multidisciplinary clinical care, engage in international natural history studies, and provide cutting edge therapeutics.

Dr. Sumner’s research focuses on developing treatments for degenerative disorders of motor neurons and peripheral nerves.  Her laboratory uses human tissues and induced pluripotent cell lines, mouse models and cultured cells to characterize disease mechanisms and develop treatments.

Dr. Charlotte Sumner received her medical degree from the University of Pennsylvania School of Medicine following undergraduate studies at Princeton University. She completed internal medicine internship and neurology residency at the University of California San Francisco, after which she returned to the east coast for a neuromuscular fellowship at Johns Hopkins and a neurogenetics fellowship in the Neurogenetics Branch at the National Institute of Neurological Disorders and Stroke. She joined the neurology faculty at Johns Hopkins in 2006.

Find a Clinical Trial

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Recent News Articles and Media Coverage

  • A SMART Approach to SMA Research, NeuroLogic (March 2015)

Additional Academic Titles

Professor of Genetic Medicine, Professor of Neuroscience

Research Interests

Spinal muscular atrophy and Inherited Neuropathy

Research Summary

Dr. Sumner’s laboratory research focuses on the genetic and cellular pathogenesis of motor neuron and peripheral nerve disorders with particular attention to identification of disease genes, characterization of molecular and cellular disease mechanisms, and preclinical development of therapeutics. Her research efforts contributed to the scientific foundations leading to three FDA-approved, gene-targeted treatments for proximal spinal muscular atrophy (SMA) caused by mutations of the survival motor neuron 1 gene (SMN1)-the first such treatments for a neurodegenerative disease. She also identified mutations of a cell surface expressed ion channel, transient receptor potential vanilloid 4 (TRPV4) as a cause of SMA and CMT2 and is currently developing treatment for this disorder. Her research contributions have been recognized by elected membership in the American Society of Clinical Investigators and the American Association of Physicians. She serves as an advisor to multiple SMA, CMT, and peripheral neuropathy nonprofit foundations, government, and private companies. She is the coeditor of the only comprehensive book on SMA: Spinal Muscular Atrophy Disease Mechanisms and Therapy. As part of a commitment to make gene targeting therapeutics accessible throughout the world, she chairs the Spinraza Individual Patient Humanitarian Access Program Medical Expert Committee. She is committed to teaching at all levels with particular attention to training individuals underrepresented in biomedicine and has been awarded several teaching awards.

Locations

  1. Levi Watkins, Jr., M.D., Outpatient Center

Expertise

Education

  • Fellowship: Johns Hopkins University School of Medicine, Neuromuscular Medicine, 2001
  • Residency: UCSF Medical Center, Neurology, 2000
  • Medical Education: University of Pennsylvania School of Medicine, MD, 1996

Board Certifications

  • Neurology: American Board of Psychiatry and Neurology, 2001

Insurance

Please contact the location directly to confirm your health plan is accepted.
Search plans
  • Aetna
  • CareFirst
  • Cigna
  • First Health
  • Geisinger Health Plan
  • HealthSmart/Accel
  • Johns Hopkins Health Plans
  • MultiPlan
  • Pennsylvania's Preferred Health Networks (PPHN)
  • Point Comfort Underwriters
  • Private Healthcare Systems (PHCS)
  • Veteran Affairs Community Care Network (Optum-VACCN)

Ratings & Reviews

4.9 out of 5

58 ratings, 33 reviews

The Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.

Overall Rating by Patient
Provider Listened Carefully
Provider Explained Things Clearly
Provider Knew Medical History
Provider Showed Respect
Provider Spent Enough Time
Search reviews
    5 out of 5 stars
    Reviewed on 3/23/2026

    Dr. Sumner has a wealth of knowledge and experience in neuropathy. She provides answer to all my questions and a plan to move forward.

    5 out of 5 stars
    Reviewed on 3/23/2026

    Excellent. Very thorogh

    5 out of 5 stars
    Reviewed on 3/9/2026

    Dr Sumner gave me a very complete exam, asked questions about my history and listened.

    5 out of 5 stars
    Reviewed on 3/9/2026

    Dr. Sumner is EXCELLENT! I've been seeing her for years and she is always professional, caring, and takes time to address any concerns. An expert in her field!

    5 out of 5 stars
    Reviewed on 3/2/2026

    Dr. Sumner has followed me for many years and has been most helpful with my rare diagnosis RILP as she monitors my condition She is able to perform a complete exam on me and compare the results t my last visit and make the recommendations accordingly.

    5 out of 5 stars
    Reviewed on 2/23/2026

    Dr Sumner went above and beyond the expected in the review of my records before my arrival, and the time spent face to face during my appointment in order to maximize my visit. She even expedited my check out so not to miss my flight.

    5 out of 5 stars
    Reviewed on 2/18/2026

    Very caring of her patients

    5 out of 5 stars
    Reviewed on 2/9/2026

    Dr Sumner is knowledgeable, articulate , and who cares about her patients.

    5 out of 5 stars
    Reviewed on 2/4/2026

    Dr Sumner took a detailed Hx and performed a detailed clinical exam. I found her to be very thorough and she provided me with detailed feedback on her observations. Her explanations were easy to understand and very helpful. I would highly recommend her services.

    5 out of 5 stars
    Reviewed on 12/15/2025

    She was amazing. She listened and explained everything before she did it.

    5 out of 5 stars
    Reviewed on 12/8/2025

    This was my first visit with provider. She was/is outstanding in all respects. She was very knowledgeable about my health history.She conducted excellent exam, physically and orally.We communicated very well with each other. I

    5 out of 5 stars
    Reviewed on 11/24/2025

    She was wonderful and listen to all my concerns.

    5 out of 5 stars
    Reviewed on 11/24/2025

    A very good visit

    5 out of 5 stars
    Reviewed on 11/17/2025

    JH Advantage + is fine.

    5 out of 5 stars
    Reviewed on 11/17/2025

    She is knowledgeable and excellent doctor!

    5 out of 5 stars
    Reviewed on 11/3/2025

    My neurologist has an incredible knowledge on my disease/issue.

    5 out of 5 stars
    Reviewed on 10/13/2025

    Outstanding doctor!

    5 out of 5 stars
    Reviewed on 10/13/2025

    Excellent care,

    5 out of 5 stars
    Reviewed on 9/29/2025

    Well spoken, clear, knowledgeable, good listener, very good explanations, caring and and to process my concerns and provide good counsel

    5 out of 5 stars
    Reviewed on 9/8/2025

    Very professional and knowledgeable

    5 out of 5 stars
    Reviewed on 8/25/2025

    Dr Sumner is very thorough in both discussing the problem/solutions and examining me.

    5 out of 5 stars
    Reviewed on 8/11/2025

    Dr. Sumner was very professional and prepared for my appointment. She took the time to review my history & asked appropriate questions to best diagnose my condition. She was kind & empathetic.

    5 out of 5 stars
    Reviewed on 8/4/2025

    Dr Sumner is an excellent neurologistI am so happy and lucky to have her as my provider I came from Knoxville Tn to see her They helped me to put me on their scheduleEvery minute she appended for me was so valuable I admire herHer knowledge professionalism and dedication to her patient is so valuable

    5 out of 5 stars
    Reviewed on 6/23/2025

    I feel she answered questions and explained things very well.

    5 out of 5 stars
    Reviewed on 6/16/2025

    Thanks for all you do to help me.

    5 out of 5 stars
    Reviewed on 6/9/2025

    Dr. Sumner is a Godess.

    5 out of 5 stars
    Reviewed on 6/2/2025

    Dr. Sumner is an excellent doctor. I so wish she could have seen a friend with CMT, but we couldn't figure a way to get her here.

    5 out of 5 stars
    Reviewed on 6/2/2025

    I know I'm getting the best care possible!

    5 out of 5 stars
    Reviewed on 5/28/2025

    Dr. Sumner was very kind and thorough in providing care/exam, explaining condition, diagnosis, genetic testing, clinical trials, treatment options and what to expect as follow up to appointment.

    5 out of 5 stars
    Reviewed on 5/12/2025

    My visit was great and the provider was very attentive.

    5 out of 5 stars
    Reviewed on 5/5/2025

    My appointment started late, but they let me know and were concerned.

    5 out of 5 stars
    Reviewed on 4/28/2025

    Always excellent both in her knowledge of my condition and her care for my outcome.

    5 out of 5 stars
    Reviewed on 4/21/2025

    Dr. Sumner was warm, attentive and seemed to genuinely care about my situation. I have seen many neurologists in my life but few have been as curious, open minded, and approachable as Dr. Sumner.