As a staple food crop, rice is important for the food security of Sri Lanka; but yield is affected by many factors. Crop clinics are a supportive tool to the existing agricultural extension system which can deliver quality advice to farmers. The present study evaluated crop clinic data on the diagnosis of rice plant health problems as well as plant protection advices for farmers in Sri Lanka. A total of 1,032 crop clinic queries, as captured in the database of the Plant-wise Online Management System were analysed for the period between June 2012 and August 2016. The validity of diagnosis based on symptom descriptions made for crop samples brought by farmers to the clinics were evaluated. More than 60% of the queries were correctly diagnosed. More than 50% of valid recommendations were observed and it was not significant over the time. To assess the relationship between correct diagnosis and valid recommendations with Plant Doctor’s extension experience, regression analyses were used. There was no significant trend of correct diagnosis and valid recommendations with growing agricultural extension experience. The study recommends advanced training for Plant Doctors to improve symptoms description and quality of recommendations.