Dr. Bajaj is the President of Radiation Oncology Associates, PC and the emeritus Chairman and Medical Director of the Department for Advanced Radiation Oncology and Proton Therapy at the Inova Schar Cancer Institute, having served in this role from 2014-2020.  Prior to joining the radiation oncology practice at Inova Schar Cancer Institute, he served as an Instructor in Radiation Oncology, Medical Oncology and Otolaryngology Head and Neck Surgery at The Johns Hopkins Hospital. His clinical focus and academic interests center on providing high-level multidisciplinary care to patients with head and neck malignancies and functional radiation therapy for hyperproliferative and inflammatory musculoskeletal conditions.  He participates in the American Society for Radiation Oncology’s Head & Neck Cancer Resource Panel and is co-author of the 2024 ASTRO clinical guidelines for HPV associated oropharyngeal cancer.

His academic pursuits focus on resident medical education, exploring novel mechanisms of radiation associated toxicity management, and emerging technologies in radiation oncology. His other areas of interest include radiation therapy for non-malignant disorders with a specific focus on Dupuytren’s and Ledderhose diseases, Osteoarthritis and Plantar Fasciitis. He oversees one of the nation’s busiest practices for the treatment of these conditions with radiotherapy and is actively involved in research, physician training, and patient advocacy for these conditions.  He has also presented his experience on the treatment of these conditions at the national level through grand rounds at the Mayo Clinic and lectures sponsored by ASTRO.  He holds academic rank as Associate Professor at The University of Maryland Medical System, University of Virginia School of Medicine and the Uniformed Services University of the Health Sciences. In 2022 he was designated Fellow of the American Society for Radiation Oncology (FASTRO).  A designation held by fewer than 500 persons globally. 

Dr. Bajaj was raised in Overland Park, Kansas and graduated with honors from the University of Kansas, receiving dual degrees in Biology and Genetics. He received his medical degree from the University of Kansas School of Medicine, where he was elected to the Alpha Omega Alpha Medical Honor Society and served as Class President. He has also performed cancer research at the Otto-von-Guericke Universität in Magdeburg, Germany and gastrointestinal oncology training at The University of Amsterdam’s Academish Medisch Centrum.  He went on to complete an Internal Medicine Internship at Harvard Medical School’s Beth Israel Deaconess Medical Center, and a Radiation Oncology residency at The Johns Hopkins Hospital, where he was Chief Resident and recipient of the Howard Wong Fellowship in Medical Informatics. He has a Master’s in Business Administration from the University of Oxford with a focus on healthcare-centered innovation strategy and social entrepreneurship. He has published numerous scientific articles and reviews on the treatment of head and neck cancers, prostate cancer, breast cancer and emerging technologies in radiation oncology. Dr. Bajaj has consistently been recognized as a Top Doctor in Washingtonian and Northern Virginia magazines, and was recognized as a Washington Post Rising Star in 2013.

Outside of his clinical and administrative roles, Dr. Bajaj has served on the Board of Directors for The American Society for Radiation Oncology and remains active in their Government Relations Committee. He has also served on the ASTRO Finance and Practice Accreditation Committees. He presently serves on the Board of Directors of 9114HNC, a D.C.-based non-profit which provides financial assistance to indigent patients with head and neck cancer and on the Inova Foundation Board of Trustees.