Educational Qualifications & Honorary titles:
• BSc in Chemistry from the Madurai Kamaraj University, India (May 80)
• MBBS from The Christian Medical College, Vellore India (Aug 86)
• DTCD (Diploma course in Chest Diseases & Tuberculosis) at the Madras Medical College, affiliated to the Dr. MGR Medical University Madras, India (Apr 92) 
• Dip NB (Diplomate of The National Boarding Respiratory Diseases) by the National Board of examinations, New-Delhi, India (Nov 92)
• FCCP (Fellow of the College of Chest Physicians) by the American College of Chest Physicians, USA (Jun 99) 
• Advanced training in Respiratory Medicine, University of Adelaide, South Australia (Jan 2000)
• FRCP (Fellow Of the Royal College of Physicians) by the Royal College of Physicians & Surgeons, Glasgow, UK (July, 2007)
• FICS (Fellow of the Indian Chest Society; Nov 2013)
• FAPSR(Fellow of the Asia Pacific Society of Respirology; Jul 2016)               

Current Positions:
• Member of the R&D Clinical Characterization and Management Research Expert group, World Health Organisation (Jun 2020)
• Executive committee member of RePORT International coordinating Centre, for global coordination of various national RePORT TB consortia (from May 2020)
• President,  Indian Chest Society (from  Nov 2018)
• Professor of Pulmonary Medicine, The Christian Medical College & Hospital, Vellore, India (from Nov 2001)
• Researcher Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) the largest and most comprehensive effort to date to measure epidemiological levels and trends worldwide
• Expert committee member(Anti-infectives), Standing National Committee on Medicine (SNCM) for revision of National List of Essential medicines (NLEM), Department of Health & Family Welfare (Drugs Regulation Section), Ministry of Health & Family Welfare, Government of India(from Oct 2019) 
• Member Specialist committee(Pulmonology) of the Ayushman Bharat Pradhan Mantri Jan Arogya Yojana(AB PM-JAY) a flagship scheme of Government of India
• Member of the ‘Expert Group on Tuberculosis’. Department of Biotechnology(DBT), Ministry of Science & Technology(from Aug 2016) 
• Member of the ‘TB Working Group Expert Panel’ of the India TB Research consortium of the Indian Council of Medical Research(ICMR) (from Sept 2016)
• Member of the Volunteer Infection Research Consortium, the Translational Health Science and Technology Institute(THSTI) (from Jul 2019)   
• Course Director, Diploma in Allergy and Asthma Distance Education Program -Endorsed by American Association of Asthma, Allergy & Immunology & University of Colorado, Denver (from 2006)