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Assoc Prof Chai Josiah

Assoc Prof Chai Josiah

MBBS (Singapore), MRCP (United Kingdom), FRCP (Edinburgh), FAMS (Neurology)

Head & Senior Consultant


National Neuroscience Institute

Specialty: Neurology, Neurology

Clinical Interest: General Neurology, Neuromuscular Disease

Conditions Treated by this Doctor:
Carpal Tunnel Syndrome, Motor Neuron Disease, Myasthenia Gravis, Neuromuscular Diseases.

Clinical Appointments

  • Head & Senior Consultant Department of Neurology National Neuroscience InstituteNational Neuroscience Institute
  • Head & Senior Consultant Neuromuscular Laboratory National Neuroscience InstituteNational Neuroscience Institute
  • Senior Consultant Department of Neurology Changi General HospitalChangi General Hospital


Dr Josiah Chai is Head & Senior Consultant at the National Neuroscience Institute, Department of Neurology (NNI@TTSH). In addition, he is also in charge of the Neuromuscular Laboratory in National Neuroscience Institute.

He graduated in Medicine from the National University of Singapore in 1994, completed his Basic Specialty Training in Internal Medicine and became a member of the Royal College of Physicians (UK) in 1999. Subsequently, he joined NNI in 2000 and completed his neurology training in 2003. He underwent fellowship in neuromuscular diseases and electromyography at the University of Rochester Neuromuscular Center, New York, where he spent about two years. Dr Chai’s special interest is in the evaluation and management of neuromuscular diseases. Besides doing electromyography studies, he also reads muscle biopsies.


  • Fellowship in Neuromuscular Diseases and Electromyography (University of Rochester, New York)
  • Specialist Accreditation in Neurology, 2003
  • MRCP (United Kingdom), 1999
  • MBBS (Singapore), 1994

Professional Appointments and Committee Memberships

  • Head & Senior Consultant, Department of Neurology, National Neuroscience Institute (NNI@TTSH)
  • Head & Senior Consultant, Neuromuscular Laboratory, National Neuroscience Institute
  • Programme Director, Motor Neuron Disease and Neuromuscular Disorders, National Neuroscience Institute
  • Senior Consultant, Division of Neurology, Changi General Hospital
  • Lead in Neurology, Lee Kong Chian School of Medicine, Nov 2012 to Oct 2015
  • Clinician Physician Faculty Member, SingHealth Residency Program, Dec 2014 to Present
  • Executive Member, Asian Oceanian Myology Centre, 2012 to Present
  • Adjunct Associate Professior, Lee Kong Chian School of Medicine
  • Adjunct Assistant Professor, Duke-NUS Graduate Medical School
  • Clinical Senior Lecturer, Yong Loo Lin School of Medicine, NUS


  • Dean’s Award for Teaching Excellence AY 16/17 (Yong Loo Lin School of Medicine, NUS)
  • Singapore Health Quality Service Award, 2017 (Gold)
  • Singapore Health Quality Service Award, 2016 (Silver)
  • SingHealth Long Service Award, 2015 (20 years)
  • SingHealth Residency Outstanding Faculty Award, 2014
  • NHG Excellence Award of Teaching, 2002

Research Interests

  • ​Neuromuscular disease
  • Muscle histopathology


Research Trials