Currently associated with Sir Ganga ram hospital, new Delhi.
His area of interest are Research Interests are Hepatocellular carcinoma, Portal hypertension, Liver diseases in pregnancy, Acute-on-chronic liver failure and Hepatitis B.
To his credit, he has over 70 publications
Dr Kumar is member of various renowned organizations such as Member of the European Association for the Study of the Liver (EASL), Member of the Indian Association for the Study of the Liver (INASL), Member of Indian Society of Gastroenterology (ISG), Member of Association of Physicians of India (API) and Member of Indian Medical Association (IMA)