• Working  as Registrar, Nurology in Manchester Royal Infirmary  and North Manchester GH, UK. (1996 - 1997) 
• Working as Specialist Registrar, Neurology in Hope Hospital, Salford and Manchester Royal Infirmary,UK. 1997-2000
• Research Registrar and Hon. SpR, Neurology in Radcliffe Infirmary, Oxford, UK (2000)
• Specialist Registrar, Neurology in Greater Manchester Neurosciences Centre, Hope Hospital, Salford, UK (2000-2001)
• Consultant Neurologist in Plymouth Hospitals NHS Trust, UK (2001-2002)

• Fellow of the Royal College of Physicians of London
• Fellow of the Royal College of Physicians of Edinburgh
• Member, World Federation of Neurology - Research Group on Aphasia and Cognitive Disorders
• Member, Asian Society against Dementia
• CME Convener, Association of Neuroscientists of Eastern India
• Member, American Academy of Neurology
• Member, Executive Committee, Alzheimer's and Related Disorders Society of India
• Member, IAN Subsection on Cognitive Neurology

Reviewer & Examiner

• Examiner for MRCP (UK) Part 2 Clinical Examination(Paces);
• Peer reviewer for several international journals on neurology
• Task force member of Cognitive Science Research Initiative (CSRI), Department of Science and Technology (DST), New Delhi