Dr.Rajiv Ranjan Kumar is an expert in the field of Clinical Immunology and Rheumatology. His focus areas are rheumatoid arthritis, lupus (SLE), Myositis, scleroderma (systemic sclerosis), psoriatic arthritis, Spondyloarthritis, including ankylosing arthritis, sarcoidosis, vasculitis, osteoporosis, and other autoimmune diseases. He brings with him an experience of 10 years. He was previously worked with hospitals like All India Institute of Medical Sciences (New Delhi), Signature Hospital (Gurgaon), Polaris Hospital (Gurgaon), and Columbia Asia (Gurgaon). He completed his Graduation and Post-Graduation in General Medicine from West Bengal University of Health Sciences. He has also done his Post Doctorate training of 2 years in Rheumatology and Clinical Immunology, AIIMS, New Delhi. He further obtained a Doctorate in Medicine (DM) in Clinical Immunology and Rheumatology from the Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh. He completed his EULAR Course - Rheumatic Diseases from Kilchberg, Switzerland, and currently working in Twin Tulip Medicare.

Dr.Rajiv Rajan Kumar won the Young Scholar Award (Torrent) in Rheumatology, Cochin, in 2018 and Oral Presentation and D.M. Quiz at CME on Infections and Rheumatic Diseases in 2017, organized by P.D. Hinduja Hospital and Medical Research Centre. He was the third Runner-up in IRA DM Rheumatology Quiz at IRACON Lucknow, 2017, fifth in Rheumatology Quiz by Delhi Rheumatology Association, Delhi, 2016, and Dr. S.D. Deodhar All India Intercollegiate Post Graduate Rheumatology Quiz, Hyderabad 2015. He has authored 3 chapters and more than 23 articles in various national and international journals.