International Medical Sciences Academy • Fellow – Royal Society of Medicine, London • Life member - Association of Physicians of India, Cardiological Society of India, Indian College of Interventional Cardiology, Indian Rheumatology Association, Indian Society of Nephrology, Asian Pacific Society of Nephrology. Indian Society of Haemodialysis, Delhi Society of Haematology, Association of Physicians of India – Delhi Chapter, Cardiological Society of India – Delhi Chapter, Indian Medical Association. • Member - Alumni of Association, Department of Nephrology, I.M.S., Banaras Hindu University; Member – National Kidney Foundation, USA; Long-term member – European Society of Endocrinology.