SRI LANKA MEDICAL ASSOCIATION
- Council Member: 2004 – 2019
- Chairman- Media Committee (Served as Convener since 2004 to 2015): 2015 to date
- Chairman- Health Management Committee: 2019 to date (Served as Secretary since 2015 and as member since 2010) – Served as SLMA representative in the Committee to formulate an organized Family Practitioner System for Sri Lanka of the Ministry of Healthcare and Nutrition 2006/2007
- Secretary Ethics Committee: 2017 (and member to date)
- Chairperson Membership Drive Committee: 2007
- Chair cum Convener Specialist Committee on Healthcare Waste Management: 2005-2007(Work of the Committee led to drafting of a Parliamentary Bill on Healthcare Waste Management in Sri Lanka) – Served as SLMA representative on the National Steering Committee on Clinical Waste Management 2006
- Convener National Health Policy Committee: 2005-2007
Convener Committee on election reforms process to the SLMA Council
2006
- Member Health Education Committee: 2005-2007
- Public Relations Officer SLMA: 2007 – Served as the SLMA representative to the National Science Foundation International Council for Science 2007/2010
- Assistant Secretary SLMA: 2008
- Honorary Secretary SLMA: 2009 and 2014
- Treasurer SLMA: 2010 to 2013
- Vice President SLMA: 2016
- President-Elect SLMA: 2017
- President SLMA: 2018
- Immediate Past President SLMA: 2019
COLLEGE OF GENERAL PRACTITIONERS OF SRI LANKA
- Fellow of the College of General Practitioners of Sri Lanka: Since 2014
- Council Member: 2010 to date
- Assistant Secretary: 2011
- Honorary Secretary: 2012
- Treasurer: 2015
- Secretary to the Membership Board of the College: 2011 to 2017
- Recourse person for Membership Course conducted by the College: 2010 to date
- Examiner MCGP exam: 2010 to date (Served as Chief Examiner in 2014)
- Mentor of the College: 2012 to date
- Member Editorial Board of the Sri Lankan Family Physician: 2017 to date
- Life member: Since 2004
COLLEGE OF COMMUNITY PHYSICANS OF SRI LANKA
- Chairperson -Sub Committee on Waste Disposal of the Public Health Forum of the College: 2008-2009
- Founder Member of the Public Health Forum of Sri Lanka: 2008
- Life Member: Since 2003
PALLIATIVE CARE ASSOCIATION OF SRI LANKA
- Founder Member and Member of the Board of Management: Since 2012
GERIATRIC ASSOCIATION OF SRI LANKA