Dr. Rajender Kumar

Dr. Rajender Kumar

Radiation Oncologist

16+ Year of Experience

MBBS, DNB

Max Super Speciality Hospital, Shalimar Bagh, New Delhi – India Max Super Speciality Hospital, Shalimar Bagh, New Delhi – India

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About Dr. Rajender Kumar

Dr. Rajender Kumar is an exceptionally skilled and accomplished Radiation Oncologist, recognised as one of the leading figures in his field in India. He has become a master of advanced, high-precision radiation techniques that have revolutionised cancer treatment. As one of the top radiation oncologists in India, Dr. Kumar is renowned for his expertise in Stereotactic Radiosurgery (SRS) and Stereotactic Body Radiotherapy (SBRT), offering non-invasive, highly effective treatment for complex tumours of the brain, lung, liver, and spine. His work is marked by a deep commitment to integrating cutting-edge technology like Image-Guided Radiotherapy (IGRT) and RapidArc with compassionate, patient-centric care, ensuring optimal outcomes with minimal side effects.

OPD Schedule Of Dr. Rajender Kumar

Consultation Fees Rs. 1000 /-
Max Super Speciality Hospital, Saket, New Delhi
MON 10:00 AM - 05:00 PM
WED 10:00 AM - 05:00 PM
THU 10:00 AM - 05:00 PM
FRI 10:00 AM - 05:00 PM
SAT 11:00 AM - 03:00 PM
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Medical Degrees
  • MBBS: King George's Medical University, Lucknow
  • DNB (Radiation Oncology): Rajiv Gandhi Cancer Institute & Research Centre, Delhi
Fellowships & Special Training
  • Dr. Kumar's training at the prestigious Rajiv Gandhi Cancer Institute provided him with extensive experience in modern radiation oncology techniques, including IMRT, IGRT, and Brachytherapy.
Certifications & Accreditations
  • Member of multiple prestigious national and international oncology societies, including ASTRO and ESTRO, reflecting his commitment to global standards of care.

Major Cancer Types Treated
  • Brain Tumours (Benign and Malignant)
  • Lung Cancer
  • Breast Cancer (with a special focus on left-sided breast cancer)
  • Prostate Cancer
  • Liver Tumours
  • Head and Neck Cancers
  • Gynaecological Cancers (Cervical, Endometrial)
  • Spinal Tumours
  • Soft Tissue Sarcomas
Sub-specialties
  • Stereotactic Radiosurgery (SRS) & Stereotactic Body Radiotherapy (SBRT)
  • Image-Guided Radiotherapy (IGRT)
  • Intensity-Modulated Radiotherapy (IMRT)
  • Volumetric Modulated Arc Therapy (VMAT/RapidArc)
  • Brachytherapy
  • Respiratory Gating Techniques
Advanced Procedures Performed
  • Stereotactic Radiosurgery (SRS): A single high-dose radiation treatment for brain tumours.
  • Stereotactic Body Radiotherapy (SBRT): Highly focused radiation delivered in 1-5 sessions for tumours in the lung, liver, spine, and prostate.
  • RapidArc Therapy: A fast and precise form of IMRT that delivers radiation in a continuous arc.
  • Image-Guided Radiotherapy (IGRT): Using real-time imaging to ensure pinpoint accuracy during radiation delivery.
  • Respiratory Gating for Left-Sided Breast Cancer: A specialised technique to protect the heart from radiation exposure during treatment.
  • High-Dose-Rate (HDR) Brachytherapy: For gynaecological malignancies and soft tissue sarcomas.

Current Affiliation:
  • Director & HOD - Radiation Oncology, Max Super Speciality Hospital, Shalimar Bagh, New Delhi
Past Affiliations:
  • Additional Director - Radiation Oncology, Fortis Hospital, Shalimar Bagh, Delhi (2019 - 2021)
  • Senior Consultant, Consultant, Associate & Attending Consultant - Radiation Oncology, Max Institute of Cancer Care, Saket, Delhi (2012 - 2019)
  • Senior Resident - Radiation Oncology, Max Institute of Cancer Care, Saket, Delhi (2010 - 2012)
  • Junior Resident - Radiation Oncology, Rajiv Gandhi Cancer Institute & Research Centre, Delhi (2006 - 2009)
Academic & Research Roles
  • Dr. Kumar is actively involved in research and has authored numerous publications and presented his work at national and international conferences.
  • He has participated in several clinical trials, contributing to advancements in the field of radiation oncology.
Key Achievements & Contributions
  • A pioneer in the clinical application and research of SBRT for liver, lung, and spine tumours in India, winning multiple awards for his work.
  • Instrumental in implementing advanced techniques like respiratory gating for left-sided breast cancer to enhance patient safety.
  • Has held progressively senior leadership roles in the radiation oncology departments of major tertiary care hospitals in Delhi.

Dr. Kumar is a highly decorated oncologist, having won numerous "Best Paper" awards for his innovative research:
  • First Prize, Indian Cancer Congress (2013): For his work on respiratory gating in left-sided breast cancer.
  • First Prize, International Conference on Liver & Biliary Disease (2011): For research on Stereotactic Body Radiotherapy (SBRT) for liver tumours.
  • Multiple Awards at NZAROI, National AROI, RGCON & YROC conferences for his papers on SBRT for lung and spine tumours, brachytherapy for sarcomas, and managing side effects in head & neck cancer.

Dr. Kumar has consistently contributed to medical literature through his award-winning presentations and research papers focused on advancing radiation therapy techniques.
  • Role of Brachytherapy on Soft Tissue Sarcomas, NZAROI Conference (2009)
  • Stereotactic Body Radiotherapy (SBRT) Liver, International Conference on Liver & Biliary Disease (2011)
  • Stereotactic Body Radiotherapy Lung, National AROI Conference (2012)
  • Breast Gating in Left-Sided Breast Cancer Patients, Indian Cancer Congress (2013)
  • Spine SBRT, YROC Conference (2015)

Notable Cases Handled
  • Dr. Kumar has successfully treated numerous patients with inoperable tumours of the lung and liver using SBRT, offering a curative, non-invasive treatment option where none existed before. He has also enabled many women with left-sided breast cancer to undergo radiation safely by using advanced respiratory gating techniques to protect their hearts.
Patient Testimonials
  • "My father was diagnosed with an inoperable lung tumour, and we felt hopeless. Dr. Rajender Kumar suggested SBRT. The treatment was just five sessions, completely painless, and the results were miraculous. The tumour has shrunk significantly. Dr. Kumar's expertise and positive attitude were our biggest support." - Anjali S.
  • "I was very worried about the effects of radiation on my heart for my left-sided breast cancer. Dr. Kumar explained the respiratory gating technique in detail and assured me of its safety. The entire process was handled so professionally and with such care. I am now cancer-free and feel great. He is the best radiation oncologist in India." - Mrs. Fatima K.
  • "I had a single brain metastasis, and the thought of whole-brain radiation was frightening. Dr. Kumar performed SRS, a one-day procedure that targeted only the tumour. It was incredibly precise and effective. His command over technology is simply amazing. I highly recommend him." - S. Venu

  • Patient-Centred Care: Dr. Kumar’s approach is rooted in compassion and communication. He believes that every patient deserves a treatment plan tailored to their specific cancer, health status, and personal circumstances. He is known for his ability to explain complex technical procedures in an easy-to-understand manner, empowering patients and their families throughout their treatment journey.
  • Technology & Innovation: Dr. Kumar is a passionate advocate for using technology to maximise therapeutic gain. His philosophy is to employ the most advanced, high-precision radiation techniques—like SBRT, SRS, IGRT, and RapidArc—to deliver a powerful, curative dose of radiation directly to the tumour while meticulously sparing surrounding healthy tissues, thereby minimising side effects and improving quality of life.

For the consultation fee, you can connect with the Cancer Rounds team. The cost of radiation therapy depends heavily on the technology used, the number of sessions (fractions), and the complexity of the treatment plan.
Advanced Radiation TherapyEstimated Cost in India (INR)Estimated Cost in India (USD)
IMRT / IGRT (30-35 sessions)₹ 2,50,000 - ₹ 4,00,000$ 3,000 - $ 4,800
RapidArc / VMAT (30-35 sessions)₹ 3,00,000 - ₹ 5,00,000$ 3,600 - $ 6,000
Stereotactic Body Radiotherapy (SBRT) (1-5 sessions)₹ 4,00,000 - ₹ 6,50,000$ 4,800 - $ 7,800
Stereotactic Radiosurgery (SRS) (Single Session)₹ 3,50,000 - ₹ 5,50,000$ 4,200 - $ 6,600
Brachytherapy (per application/fraction)₹ 40,000 - ₹ 70,000$ 480 - $ 840
Note: These are indicative costs. The final cost will be determined after a detailed evaluation and treatment planning. For a personalised cost estimate, please consult with the Cancer Rounds team.

  • Language Support: The Cancer Rounds team provides dedicated multilingual coordinators and interpreters to ensure that international patients experience no communication barriers during their consultation and treatment.
  • Visa & Travel Assistance: We offer comprehensive assistance for international patients, including providing medical visa invitation letters and helping with travel and accommodation arrangements to ensure a smooth and hassle-free visit.
  • Pre-treatment Virtual Consultations: Dr. Kumar is available for pre-travel virtual consultations. This allows patients from abroad to share their medical reports for a second opinion and receive a preliminary treatment plan and cost estimate before coming to India.

Frequently Asked Questions

Dr. Rajender Kumar is a senior Radiation Oncologist in India. He specialises in using advanced radiation techniques to treat various cancers, with a particular focus on high-precision therapies like Stereotactic Radiosurgery (SRS) and Stereotactic Body Radiotherapy (SBRT).

Stereotactic Body Radiotherapy (SBRT) is a highly advanced radiation technique that delivers very high doses of radiation to a tumour in just 1-5 sessions. Dr. Kumar is considered a leading SBRT specialist in India due to his pioneering research and extensive clinical experience in successfully treating lung, liver, and spine tumours with this non-invasive method.

For patients with left-sided breast cancer, Dr. Kumar uses a special technique called Respiratory Gating (or Deep Inspiration Breath Hold - DIBH). This method involves treating the patient only when they take a deep breath, which moves the heart away from the radiation field, thus significantly reducing the risk of long-term cardiac damage.

No, modern radiation therapy is a completely painless and non-invasive procedure. Patients do not feel anything during the treatment session, which is similar to getting an X-ray or CT scan.

His status as a top radiation oncologist in India comes from his mastery of cutting-edge technologies (SBRT, SRS, IGRT), his award-winning research that has shaped clinical practice, and his patient-focused approach that combines clinical excellence with compassionate care.

Image-Guided Radiotherapy (IGRT) uses real-time imaging to ensure the radiation beam is perfectly aligned with the tumour at every session, increasing accuracy. RapidArc (VMAT) is a faster form of IMRT that delivers radiation in a continuous arc, reducing treatment time and improving patient comfort while maintaining high precision.

Yes, for certain patients with early-stage but medically inoperable tumours (like in the lung or liver), SBRT has shown to provide cure rates comparable to surgery. It is an excellent non-invasive alternative for patients who are not fit for anaesthesia or major surgery.

You can easily arrange for a second opinion or a virtual consultation with Dr. Kumar by contacting the Cancer Rounds team. They will facilitate the sharing of your medical reports and schedule a call to discuss your case with him.