About Dr. Siddharth Kumar Sahai
Dr. Siddharth Sahai is a distinguished and leading Medical Oncologist in India. With an illustrious academic background from the country’s premier institutions, Dr. Sahai brings over 17 years of medical experience to his practice. He is an alumnus of the prestigious All India Institute of Medical Sciences (AIIMS), New Delhi, where he completed his super-specialisation (DM) in Medical Oncology.
Dr. Sahai is renowned for his expertise in the comprehensive management of both solid tumours and haematological malignancies. He is one of the few oncologists in the region to hold the European Society for Medical Oncology (ESMO) certification, a testament to his adherence to global standards of cancer care. His clinical focus includes Precision Oncology, utilising advanced Immunotherapy and Targeted Therapy to treat complex cancers of the lung, breast, and gastrointestinal tract. Known for his compassionate approach, Dr. Sahai actively participates in multi-disciplinary tumour boards to ensure every patient receives a personalised treatment plan.
OPD Schedule Of Dr. Siddharth Kumar Sahai
Consultation Fees Rs. 1200 /-
Venkateshwar Hospital, New Delhi
Qualifications & Credentials
- MBBS: Maulana Azad Medical College (MAMC), New Delhi.
- MD (Internal Medicine): Lady Hardinge Medical College (LHMC), New Delhi.
- DM (Medical Oncology): All India Institute of Medical Sciences (AIIMS), New Delhi (The apex medical institute of India).
- ESMO Certification: Cleared the European Society for Medical Oncology examination in 2013, certifying excellence in medical oncology.
- Stem Cell Transplant Training: Gained during his tenure at AIIMS, New Delhi.
- Registered with Delhi Medical Council (Reg No: 783).
Areas of Expertise
- Head & Neck Cancers
- Thoracic Oncology (Lung Cancer)
- Breast Cancer
- Gastrointestinal (GI) Cancers (Stomach, Colon, Rectal, Liver)
- Genitourinary Malignancies (Prostate, Kidney, Bladder)
- Haematological Malignancies (Leukaemia, Lymphoma, Multiple Myeloma)
- Sarcomas (Bone and Soft Tissue)
- Brain Tumours
- Immunotherapy & Targeted Therapy
- Chemotherapy Management
- Precision Oncology
- Palliative & Supportive Care
- Stem Cell Transplantation (Bone Marrow Transplant)
- Administration of complex Chemotherapy protocols.
- Management of Immunotherapy side effects and protocols.
- Intrathecal Chemotherapy.
- Bone Marrow Aspiration and Biopsy.
List of Disease and Treatment for which Dr. Siddharth Kumar Sahai can be consulted
Professional Experience
Current & Past Hospital Affiliations
Current Affiliation:
- Director & Unit Head, Medical Oncology, Venkateshwar Hospital, New Delhi.
Past Affiliations:
- Consultant & Unit Head - Medical Oncology, Manipal Hospitals, Dwarka, New Delhi.
- Senior Consultant & Unit Head - Medical Oncology, Paras Hospitals, Gurugram.
- Senior Consultant - Medical Oncology, Max Hospital, Shalimar Bagh, New Delhi.
- Consultant - Medical Oncology, Fortis Memorial Research Institute (FMRI), Gurugram.
- Consultant - Medical Oncology & Stem Cell Transplant, AIIMS, New Delhi.
Academic & Research Roles
- Dr. Sahai has a strong academic footprint, having been involved in teaching undergraduate and postgraduate students during his tenure at Lady Hardinge Medical College and AIIMS. He continues to mentor junior oncologists and DNB students in his current leadership role.
Key Achievements & Contributions
- Achieved the prestigious ESMO Certification early in his career (2013), marking him as a globally competent oncologist.
- Successfully managed complex cases of B-cell Acute Lymphoblastic Leukaemia and Nasal NK-T cell lymphoma, contributing to research in these rare conditions.
- Played a pivotal role in establishing and leading Medical Oncology units at prominent hospitals like Paras and Manipal Dwarka.
Awards & Recognitions
Recognitions & Honors:
- Member, American Society of Clinical Oncology (ASCO).
- Member, European Society for Medical Oncology (ESMO).
- Member, Society of Medical Oncology of India (SOMOI).
- Member, Indian Society of Medical and Paediatric Oncology (ISMPO).
- Recognised for his significant contribution to cancer research with publications in high-impact journals.
Research & Publications
Published Papers in Medical Journals:
- Clinical features and outcome of B-cell acute lymphoblastic leukaemia in patients older than 9 years: A single centre experience of 241 cases from AIIMS, New Delhi, India (Leukemia & Lymphoma, 2013)
- Nasal NK-T cell lymphoma: 10-year experience of a single institute in India (Medical Oncology, 2014)
- Morbidity Patterns in Oncology Patients at FMRI, Gurgaon: A Hospital Based Study at a New Tertiary Care Institute (Asian Pacific Journal of Cancer Prevention)
Patient Success Stories & Testimonials
- Triumph over Lung Cancer - A 55-year-old patient diagnosed with Stage 4 Non-Small Cell Lung Cancer was referred to Dr. Sahai. Through precise genetic testing, Dr. Sahai identified a specific mutation and initiated Targeted Therapy. The patient, who was initially given months to live, has now been managing the disease with a good quality of life for over three years.
- Compassion in Leukaemia Care - Treating blood cancer requires rigorous monitoring. A young college student diagnosed with ALL (Acute Lymphoblastic Leukaemia) was treated by Dr. Sahai. The family commended his approach: "Dr. Siddharth didn't just treat the cancer; he treated my fear. He explained every chemotherapy cycle clearly. Today, I am back in college thanks to him."
- Expertise in GI Oncology - A patient with advanced colon cancer underwent chemotherapy under Dr. Sahai’s supervision. The patient noted, "I was terrified of side effects. Dr. Sahai’s supportive care protocol was excellent. I managed to complete my cycles with minimal discomfort. He is truly a top cancer specialist in Delhi."
Treatment Approach & Philosophy
- Patient-Centred Care: Dr. Sahai believes in "comprehensive care," treating the patient rather than just the disease. He emphasises clear communication, ensuring patients understand their diagnosis and treatment options. His philosophy is grounded in Evidence-Based Medicine, ensuring every protocol used is backed by the latest global research.
- Technology & Innovation: Dr. Sahai is a strong advocate for Precision Medicine. He integrates advanced genomic profiling to determine if patients are eligible for Immunotherapy or Targeted Therapy, moving beyond traditional chemotherapy to offer more effective, less toxic treatments.
Treatment Costs
Treatment costs vary depending on the stage of cancer, the drugs used (generic vs patent), and the duration of therapy. Below is an estimated cost table for treatments managed by Dr. Siddharth Sahai.
Treatment / Procedure | Cost Estimate (INR) | Cost Estimate (USD) |
Chemotherapy (Per Cycle) | ₹15,000 - ₹50,000 | $180 - $600 |
Targeted Therapy (Monthly) | ₹1,00,000 - ₹3,00,000 | $1,200 - $3,600 |
Immunotherapy (Per Dose) | ₹1,50,000 - ₹4,00,000 | $1,800 - $4,800 |
Hormone Therapy (Monthly) | ₹5,000 - ₹25,000 | $60 - $300 |
Bone Marrow Aspiration/Biopsy | ₹15,000 - ₹25,000 | $180 - $300 |
Note: For appointment booking and to get a personalised cost estimate, you can connect with the Cancer Rounds team.
International Patient Assistance
- Language Support: Dr. Sahai is fluent in English and Hindi. For international patients speaking other languages (such as Arabic, French, or Russian), the Cancer Rounds team provides professional medical interpreters.
- Visa & Travel Assistance: Cancer Rounds assists with the issuance of Medical Visa invitation letters, airport pick-up/drop-off, and arranging accommodation near Venkateshwar Hospital, Dwarka, which is conveniently located near the international airport.
- Pre-treatment Virtual Consultations: International patients can book a video consultation with Dr. Siddharth Sahai via Cancer Rounds to review pathology reports and scans before travelling, ensuring a streamlined treatment plan upon arrival.














