Dr. John Sebastian Mg

Dr. John Sebastian Mg

Radiation Oncology
Designation :


Dr. John Sebastian MG, Consultant Radiation Oncologist, has 6 years post MD experience in the field of Radiation Oncology. Before joining KIMSHealth he was running Thoracic and Upper GI malignancy unit of Department of Radiation Oncology at St. Johns Medical College, Bangalore where he was involved in teaching of Radiation Oncology Post Graduates and Radiation Technology Students. He has lot of experience in Brachytherapy in Gynecological Malignancies. He also has keen interest in CNS Tumors, Head and Neck Malignancies, Breast Cancers, Genitourinary Malignancies, and Radiotherapy in Lymphomas and Sarcomas. He is well experienced in advanced radiation modalities including IMRT, IGRT, VMAT SRS and SRT.Having done certification Course in Palliative Care, Dr. John integrates palliative care in the services providedand is very particular in providing evidence basedmanagement of cancer with prime importance to Quality of Life of patients.

Languages Known :

English, Malayalam, Hindi, Tamil,Kannada

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Doctor's Profile

  • MBBS- Government Medical College, Trivandrum
  • MD (Radiation Oncology)- MS Ramaiah Medical College, Bangalore
  • DNB (Radiation Oncology)- National Board of Examinations
  • Central Nervous System Tumors
  • Head and Neck Oncology
  • Thoracic, Gastrointestinal and Gynecological Malignancies
  • Stereotactic Radiotherapy


  • Muzumder S, Nirmala S, Avinash HU, Kainthaje PB, Sebastian MJ, Raj JM. Early Competing Deaths in Locally Advanced Head-and-Neck Cancer. Indian journal of palliative care 2018;24(4):446-450.
  • Muzumder, S., Nirmala, S., Avinash, H. U., Sebastian MJ., &Kainthaje, P. B. (2018). Analgesic and Opioid Use in Pain Associated with Head-and-Neck Radiation Therapy. Indian journal of palliative care, 24(2), 176-178.
  • Muzumder, S., Srikantia, N., Vashishta, G., Udayashankar, A., Raj, J., Sebastian MJ,&Kainthaje, P. (2019). Compliance, toxicity and efficacy in weekly versus 3-weekly cisplatin concurrent chemoradiation in locally advanced head and neck cancer. Journal of Radiotherapy in Practice, 18(1), 21-25. doi:10.1017/S1460396918000341
  • Koushik AS, Sebastian MG, Janaki MG, Sathish S. Adjuvant radiotherapy in carcinoma buccal mucosa; more conformal the best: Is it so? J Can Res Ther 2019; 15:539-43.
  • Muzumder S, Srikantia N, Udayashankar AH, Kainthaje PB, John Sebastian MG. Burden of acute toxicities in head-and-neck radiation therapy: A single-institutional experience. South Asian J Cancer. 2019;8(2):120-123. doi:10.4103/sajc.sajc_264_17
  • Manur JG, Sebastian MGJ, David SM. Chemo-radiation outcomes for esophageal cancer: A reflection from a tertiary cancer center on selection of patients for more aggressive therapy. Indian J Cancer. 2020 Jan-Mar;57(1):84-88. doi: 10.4103/ijc.IJC_474_18. PMID: 31929238.

Chapters in Book

  • Muzumder S., John Sebastian M.G. (2020) Plan Evaluation in IMRT and VMAT. In: Mallick S., Rath G., Benson R. (eds) Practical Radiation Oncology. Springer, Singapore 
  • Muzumder S., John Sebastian M.G. (2020) Carcinoma Lung. In: Mallick S., Rath G., Benson R. (eds) Practical Radiation Oncology. Springer, Singapore.
  • Muzumder S., John Sebastian M.G. (2021) Stereotactic Radiosurgery: Planning and Evaluation. In: Mallick S., Giridhar P., Rath G.K. (eds) Evidence based practice in Neuro-oncology. Springer, Singapore.
  • Assistant Professor, St. Johns Medical College, Bangalore
  • Senior Resident, St. Johns Medical College, Bangalore



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