Senior Consultant & Head – Radiation Oncology
MBBS, DNB (Radiation Oncology)
DHCM, PDCR, UICC (F), AROI(F)
Business Management IIM Banglore
Professor, Radiation Oncology
Welcome to the forefront of cancer care, led by Dr. (Col) Ashok Kumar, a distinguished Radiation Oncologist with more than 23 years of experience in delivering cutting-edge treatments and compassionate care to patients across the Delhi NCR region. As the Senior Consultant and Head of the Department of Radiation Oncology, Dr. Kumar brings unparalleled expertise, a patient-centric approach, and a commitment to advancing the fight against cancer. His extensive knowledge, coupled with his military discipline and dedication, makes him a trusted name in oncology, offering hope and healing to countless patients.
A Legacy of Excellence in Radiation Oncology
Dr. Ashok Kumar’s journey in medicine is marked by a remarkable blend of academic rigor, clinical expertise, and a passion for improving patient outcomes. With a career spanning more than two decades, he has treated a wide spectrum of cancers, including complex cases of Head and Neck Cancer, Brain Tumors, Breast Cancer, Soft Tissue Sarcomas, Gynecological Malignancies, and Genitourinary Malignancies. His proficiency in Palliative Oncology ensures that patients with advanced-stage cancers receive holistic care that prioritizes quality of life, symptom management, and emotional support.
Dr. Kumar’s military background has instilled in him a sense of discipline, precision, and resilience, qualities that translate seamlessly into his medical practice. His ability to remain calm under pressure and make critical decisions has earned him the trust of both patients and colleagues. His leadership in the Department of Radiation Oncology is defined by a commitment to adopting the latest technologies and treatment protocols to ensure the best possible outcomes for his patients.
A Legacy of Excellence in Radiation Oncology
Dr. Ashok Kumar’s journey in medicine is marked by a remarkable blend of academic rigor, clinical expertise, and a passion for improving patient outcomes. With a career spanning more than two decades, he has treated a wide spectrum of cancers, including complex cases of Head and Neck Cancer, Brain Tumors, Breast Cancer, Soft Tissue Sarcomas, Gynecological Malignancies, and Genitourinary Malignancies. His proficiency in Palliative Oncology ensures that patients with advanced-stage cancers receive holistic care that prioritizes quality of life, symptom management, and emotional support.
Dr. Kumar’s military background has instilled in him a sense of discipline, precision, and resilience, qualities that translate seamlessly into his medical practice. His ability to remain calm under pressure and make critical decisions has earned him the trust of both patients and colleagues. His leadership in the Department of Radiation Oncology is defined by a commitment to adopting the latest technologies and treatment protocols to ensure the best possible outcomes for his patients.
As a pioneer in the field, Dr. Kumar is renowned for his expertise in advanced radiation therapy techniques that target cancer cells with precision while minimizing damage to surrounding healthy tissues. His mastery of Brachytherapy, including both intraoperative and interstitial approaches, sets him apart as a leader in the field. Brachytherapy, a specialized form of radiation therapy, involves placing radioactive sources directly into or near the tumor, allowing for highly targeted treatment. This approach is particularly effective for cancers such as cervical, prostate, and head and neck malignancies.
Dr. Kumar’s proficiency extends to other cutting-edge radiation therapy modalities, including Intensity-Modulated Radiation Therapy (IMRT), Image-Guided Radiation Therapy (IGRT), and Stereotactic Body Radiation Therapy (SBRT). These advanced techniques enable him to tailor treatment plans to the unique needs of each patient, ensuring optimal outcomes with minimal side effects. His ability to combine technical expertise with a deep understanding of cancer biology allows him to deliver personalized care that addresses both the physical and emotional aspects of a patient’s journey.
“Dr. Kumar’s expertise spans a wide range of cancer types, making him a versatile and sought-after oncologist. His areas of specialization include”

Dr. Kumar employs advanced radiation techniques to treat complex head and neck cancers, preserving critical functions such as speech and swallowing whenever possible.

With a focus on precision, he uses stereotactic radiosurgery and other targeted therapies to treat benign and malignant brain tumors, minimizing damage to healthy brain tissue.

Dr. Kumar offers comprehensive radiation therapy plans for breast cancer patients, including post-surgical radiation to reduce the risk of recurrence.

His expertise in treating rare and complex sarcomas ensures that patients receive individualized care plans tailored to their specific condition.

From cervical to ovarian cancer, Dr. Kumar’s proficiency in Brachytherapy and external beam radiation offers effective treatment options for women.

He provides specialized care for cancers of the prostate, bladder, and kidneys, using advanced techniques to improve outcomes and quality of life.

For patients with advanced cancers, Dr. Kumar’s compassionate approach focuses on symptom relief, pain management, and improving quality of life.
At the core of Dr. Kumar’s practice is a deep commitment to patient-centered care. He believes that every patient deserves a treatment plan that is not only medically sound but also aligned with their personal goals and values. From the moment a patient steps into his care, Dr. Kumar ensures they are heard, understood, and supported throughout their treatment journey. He takes the time to explain complex medical concepts in simple terms, empowering patients and their families to make informed decisions about their care.
Dr. Kumar’s empathetic approach extends beyond clinical treatment. He recognizes the emotional and psychological challenges that come with a cancer diagnosis and works closely with a multidisciplinary team of counselors, nutritionists, and support staff to provide holistic care. His ability to connect with patients on a personal level fosters trust and confidence, making a significant difference in their treatment experience.
As the Head of the Department of Radiation Oncology, Dr. Kumar plays a pivotal role in shaping the future of cancer care in the region. He is dedicated to staying at the forefront of medical advancements, regularly participating in national and international conferences, workshops, and training programs. His contributions to the field include mentoring young oncologists, conducting research, and implementing innovative treatment protocols that enhance patient outcomes.
Dr. Kumar’s leadership extends to fostering a collaborative environment within his department. He works closely with surgical oncologists, medical oncologists, radiologists, and other specialists to develop comprehensive treatment plans that address every aspect of a patient’s condition. His commitment to interdisciplinary collaboration ensures that patients receive seamless, integrated care from diagnosis through recovery.
As a radiation oncologist, Dr. Ashok Kumar specializes in the use of advanced radiation techniques to treat various types of cancer. His expertise includes
Utilizing advanced imaging techniques to deliver precise radiation doses to tumors while minimizing damage to surrounding healthy tissue.
A sophisticated technique that allows for the modulation of radiation beams to conform to the shape of the tumor, enhancing treatment effectiveness.
A highly precise form of radiation therapy that targets tumors with high doses of radiation in fewer treatment sessions.
Precise, high-dose radiation delivered in 1-5 sessions targeting tumors with sub-millimeter accuracy while sparing healthy tissues.
Dr. Kumar is driven by a vision to make advanced cancer care accessible to all. He is passionate about raising awareness about early cancer detection and prevention, emphasizing the importance of regular screenings and healthy lifestyle choices. Through community outreach programs and educational initiatives, he strives to empower individuals to take charge of their health and reduce their cancer risk.
In addition to his clinical work, Dr. Kumar is committed to advancing the field of radiation oncology through research and innovation. He is actively involved in exploring new treatment modalities and technologies that have the potential to revolutionize cancer care. His forward-thinking approach ensures that his patients benefit from the latest advancements in the field, giving them the best chance at recovery and long-term survival.
Choosing Dr. (Col) Ashok Kumar as your oncologist means entrusting your care to a seasoned professional who combines expertise, compassion, and innovation. His extensive experience, advanced technical skills, and patient-centric philosophy make him a trusted partner in the fight against cancer. Whether you are seeking treatment for a newly diagnosed cancer or exploring palliative care options, Dr. Kumar and his team are dedicated to providing personalized, high-quality care that prioritizes your well-being.
For more information or to schedule a consultation with Dr. (Col) Ashok Kumar, contact our Department of Radiation Oncology today. Let us partner with you on your journey to recovery.
Senior Consultant & Head – Radiation Oncology
Throughout his illustrious career in the Indian Army, Dr. Kumar has been deeply involved in various aspects of cancer care and management. His military background allows him to approach patient care with discipline and precision, ensuring that each treatment plan is tailored to the individual needs of his patients. His commitment to excellence has earned him recognition from some of the highest authorities in the medical field.
Dr. Kumar played a pivotal role in establishing the Diplomate of National Board (DNB) program within the army, contributing significantly to the training and education of young oncologists. As a DNB examiner and accessor, he has been instrumental in shaping the future of oncology training, ensuring that the next generation of medical professionals is well-equipped to tackle the challenges of this complex field.
Radiation therapy
Radiation therapy plays a key role in treating cervical cancer and is often used to destroy cancer cells and control the disease.. It uses high-energy rays to destroy cancer cells and shrink tumors

Radiation therapy plays a key role in treating cervical cancer and is often used to destroy cancer cells and control the disease.. It uses high-energy rays to destroy cancer cells and shrink tumors

Volumetric Modulated Arc Therapy (VMAT) is an advanced type of radiation therapy that delivers precise radiation to cancer cells in a faster and more efficient way.

Stereotactic Radiation Therapy (SRT) is a highly precise form of radiation treatment that delivers a high dose of radiation directly to a tumor while minimizing damage to surrounding healthy tissues.
Naresh Arora23 July 2025Trustindex verifies that the original source of the review is Google. We are truly grateful for the exceptional care and support provided by Dr. Ashok Kumar throughout the 4-week radiation treatment process. His expert guidance made a difficult time much more manageable for our family. Dr. Ashok took the time to patiently explain each step of the treatment, address our concerns, and ensure that we felt supported at every stage. His dedication and compassion were deeply reassuring, and we sincerely appreciate the efforts he took to make this journey smoother for us. Thank you, Dr. Ashok for your commitment and care. Radiation Oncology16 July 2025Trustindex verifies that the original source of the review is Google. Lt. Col (Dr) Ashok Kumar sir एक अच्छे डॉक्टर है, जिनमें ज्ञान, विशेषज्ञता, अच्छा संवाद, मरीजों के प्रति करुणा और विवरणों पर ध्यान रखते है. और नवीनतम चिकित्सा प्रगति से अपडेट रहतते है. वे मरीजों की स्वास्थ्य समस्याओं को आसानी से समझने योग्य तरीके से समझाते हैं और मरीजों की चिंताओं को ध्यान से सुनते हैं. और मरीजों का अच्छे से ट्रीटमेंट करते है Shubhi Gupta16 July 2025Trustindex verifies that the original source of the review is Google. Time flew away very fast with co-operative staff and doctors. They listened to our problems and consulted us calmly. I thanks to the department 😁 Neelam Parashar12 July 2025Trustindex verifies that the original source of the review is Google. My opinion is that Dr Lt Col Ashok Kumar is great, highly experienced doctor.His guidance is life saving and full of positivity.I am thankful to Dr Ashok Kumar from bottom of my heart.very very much thank you Dr sahab.Expert in radiation for cancer patients. Ranveer Tewatia10 July 2025Trustindex verifies that the original source of the review is Google. Excellent sir Vasu Primlani31 March 2025Trustindex verifies that the original source of the review is Google. Dr Ashok Kumar truly cares. He will employ his entire might as a medical professional and his entire care as a human being. pranita priya26 December 2024Trustindex verifies that the original source of the review is Google. Extremely efficient doctor. Wonderful human being ... treats you like a person not like a patient number ... Sonica Bansal28 October 2024Trustindex verifies that the original source of the review is Google. We want to extend our sincerest gratitude to Dr Ashok for going above and beyond to provide outstanding care. Your dedication to making patients feel comfortable, even in challenging situations, is truly inspiring. Thank you for your compassion, patience, and creative approach in finding solutions that prioritize patient well-being. Your actions turned a potentially stressful experience into a positive one, leaving a lasting impact. Bhavna Sikri15 October 2024Trustindex verifies that the original source of the review is Google. Amazing doctor with positive attitude that gives immense strength to patients and their families to fight with cancer. We as a family are quite relaxed under his guidance and care. Thanks a ton doctor Tarun Kumar15 October 2024Trustindex verifies that the original source of the review is Google. A big shoutout for Lt Col (Dr) Ashok. His professional competency and efficiently as a Doctor is accented by his compassion and humane nature. We are yet to come across such a genuine personality, who is ever smiling and full of empathy. Definitely, a go to man.
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Dr. Kumar’s contributions to the field of radiation oncology have not gone unnoticed. He has been awarded by various national and military authorities for his dedication and excellence in patient care. These accolades reflect his commitment to advancing cancer treatment methodologies and improving patient outcomes. His work has not only benefited soldiers and their families but also the local civilian population in far flung areas of Kupwara, Jammu and Kashmir.
Dr. (Col) Ashok Kumar is an experienced Radiation Oncologist with over 23 years of work in treating different types of cancer, such as cancers of the head and neck, brain, female reproductive system, and urinary system.
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