DepartmentsNeurologySpecialty GroupsNeuromuscular DiseaseLocationPhoenix, ArizonaLanguagesEnglishExisting patientsSend a secure message via patient portal Biographical summaryStephen 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. Conditions treatedAmyotrophic lateral sclerosisChronic inflammatory demyelinating polyradiculoneuropathyGuillain Barre syndromeMotor neuron diseaseMyasthenia gravisMyopathy Procedures performedElectromyography InterestsNeuromuscular DisordersAmyotrophic lateral sclerosis (ALS) & motor neuron disease (MND)Electromyography (EMG) Mayo Clinic locations Phoenix, Arizona Driving Directions More info Billing & insurance Accessibility services Education2022Fellowship - Neurodegenerative Clinical ResearchMass General Brigham (MGH/BWH)2021Fellowship - Neuromuscular MedicineMass General Brigham (MGH/BWH)2020ResidencyNeurology, Programs in Rochester, Mayo School of Graduate Medical Education, Mayo Clinic College of Medicine2020ResidentNeurology, Programs in Rochester, Mayo School of Graduate Medical Education, Mayo Clinic College of Medicine2017Internship - Internal MedicineUniversity of Missouri Hospitals and Clinics2016MDSchool of Medicine, University of Missouri Columbia2012BA - Anthropology; Minors, Spanish and BiologyWashington University in St. LouisShow more education Activities and honorsCertifications2020NeurologyAmerican Board of Psychiatry and NeurologyAwards and honors2021President's Research Initiative Award, Poster2021 AANEM Conference, American Association of Neuromuscular & Electrodiagnostic Medicine2019"Above and Beyond Recognition Program" Certificate for TeamworkMayo Clinic Alix School of Medicine, Mayo Clinic College of Medicine, Department of Education AdministrationProfessional memberships2021 - presentMemberPeripheral Nerve Society2020 - presentMemberAmerican Association of Neuromuscular and Electrodiagnostic Medicine2017 - presentMemberAmerican Academy of NeurologyShow more professional membershipsPublicationsSee my publications Biographical summaryConditions treatedProcedures performedInterestsMayo Clinic locationsEducationActivities and honors Request an appointment PST-20539472 Doctors & Medical Staff Johnson, Stephen A. M.D.