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Stephen A. Johnson, M.D.

  1. Neuromuscular Disease Specialist


Grupos especializados


  1. Phoenix, Arizona



Stephen A. Johnson, M.D., is a neurologist at Mayo Clinic specializing in neuromuscular disorders and EMG. He completed his neurology residency at Mayo Clinic Rochester, followed by consecutive neuromuscular and ALS clinical research fellowships at Massachusetts General Brigham. Dr. Johnson's clinical focus is neuromuscular disease: myopathy (eg dermatomyositis), neuromuscular junction disorders (eg myasthenia gravis), peripheral neuropathy (eg Guillan-Barre syndrome), and motor neuron disease (eg ALS). He has a particular interest in ALS and leads the Mayo Clinic Arizona multidisciplinary ALS clinic. His research interests include ALS clinical trials and identification and validation of novel biomarkers to improve the lives of people living with ALS.

  1. Amyotrophic lateral sclerosis
  2. Chronic inflammatory demyelinating polyradiculoneuropathy
  3. Guillain Barre syndrome
  4. Motor neuron disease
  5. Myasthenia gravis
  6. Myopathy
  • Neuromuscular Disorders
  • Amyotrophic lateral sclerosis (ALS) & motor neuron disease (MND)
  • Electromyography (EMG)
  1. 2022
    Fellowship - Neurodegenerative Clinical ResearchMass General Brigham (MGH/BWH)
  2. 2021
    Fellowship - Neuromuscular MedicineMass General Brigham (MGH/BWH)
  3. 2020
    ResidencyNeurology, Programs in Rochester, Mayo School of Graduate Medical Education, Mayo Clinic College of Medicine
  4. 2020
    ResidentNeurology, Programs in Rochester, Mayo School of Graduate Medical Education, Mayo Clinic College of Medicine
  5. 2017
    Internship - Internal MedicineUniversity of Missouri Hospitals and Clinics
  6. 2016
    MDSchool of Medicine, University of Missouri Columbia
  7. 2012
    BA - Anthropology; Minors, Spanish and BiologyWashington University in St. Louis


  1. 2020
    NeurologyAmerican Board of Psychiatry and Neurology

Awards and honors

  1. 2021
    President's Research Initiative Award, Poster2021 AANEM Conference, American Association of Neuromuscular & Electrodiagnostic Medicine
  2. 2019
    "Above and Beyond Recognition Program" Certificate for TeamworkMayo Clinic Alix School of Medicine, Mayo Clinic College of Medicine, Department of Education Administration

Professional memberships

  1. 2021 - present
    MemberPeripheral Nerve Society
  2. 2020 - present
    MemberAmerican Association of Neuromuscular and Electrodiagnostic Medicine
  3. 2017 - present
    MemberAmerican Academy of Neurology