Member- Indian & British Society of Gastroenterology Member- American Gastroenterological Association Specialist in Medicine, Gastro-intestinal & Liver Diseases Ex. Professor & Head, Dept. of Gastroenterology
Ear Nose Throat & Head-Neck Surgeon Ex. Consultant, Dhaka Medical College & Hospital & Cancer Hospital Ex. Associate Prof., Dept. of ENT & Head- Neck Surgery
Professor (Respiratory Medicine), (Ex.) National Institute of Diseases of the Chest & Hospital (NIDCH) Senior Consultant (Pulmonology & Sleep Medicine)
Professor, Respiratory Medicine Department Bangabandhu Sheikh Mujib Medical University (BSMMU) Medicine, Pulmonologist & Sleep Medicine Specialist Labaid Specialized Hospital