1957-1981: Worked as Assist. Professor of Medicine, Assoc. Professor and Professor of Medicine, Patna Medical College. Presently, Emeritus Professor of Medicine, Patna Medical College, Patna. RESEARCH WORK ON KALA-AZAR: His suggestions have been accepted by WHO and other international org. and have been incorporated in textbook of medicine. SOCIAL WORK: Medical Education to the layman by writing on common Medical Problems in lay Press, radio and T.V. Numerous Talk on Radio, T.V. and more than 200 articles at frequent intervals on topics of general interest and from the view point of health. Free Medical Camps organized in areas of Harijans, Adivasis and weaker sections of the society. CURRENT RESEARCHES-COLLABORATIVE: WHO, Geneva– evaluation of an anti-cancer drug-Miltefosine in kala-azar. Nexstar Pharmaceutical USA- Evaluation of Ambisome(Amphotericin B lipid Complex) in resistant cases of kala-azar. Balaji Utthan Sansthan- Newer drugs, Effect of Indian Medicinal Plants on kala-azar