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Dr. David K Simson

MBBS; DNB (Radiation Oncology); ECMO (Europe)

Consultant – Gynecology & Genitourinary Radiation Oncology Services

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Rajiv Gandhi Cancer Institute, Sector - 5, Rohini, Delhi - 110 085


Dr. David K Simson is a trained radiation oncologist specializing in advanced radiation techniques such as intensity-modulated radiotherapy (IMRT), image-guided radiotherapy (IGRT), volumetric modulated arc therapy (VMAT) / Rapid Arc, stereotactic body radiotherapy (SBRT), stereotactic radiotherapy (SRT), stereotactic radiosurgery (SRS). He is also experienced in interstitial, intracavitary, and intraluminal brachytherapy.

Following graduation from AIMS, Thrissur, he joined Rajiv Gandhi Cancer Institute in 2012 for his post-graduate training in radiation oncology. After his training, he worked in different cancer hospitals in Delhi, including Action Cancer Hospital. Before he re-joined his alma mater, he was the consultant radiation oncologist at Fortis Hospital. He has many publications to his credit in various national and international journals. He cleared the European Society for Medical Oncology (ESMO) exam in 2017. He was awarded the ESMO preceptorship and attended the same in Singapore in November 2018. Dr. David has a keen interest in teaching and research; and, he is deeply involved in the post-graduate programs and research work of the Institute.

Presently, Dr. David is a consultant in Gynecology and Genitourinary Radiation Oncology services at Rajiv Gandhi Cancer Institute and Research Centre.

Specialized Areas

  • Gynecological cancers including cervical cancer, uterine cancer, endometrial cancer, vaginal cancer, and vulval cancer.
  • Genitourinary malignancies including prostate cancer, urinary bladder cancer, kindey cancer or renal cell carcinoma, ureteric cancer, testicular cancer.

Educational Background

  • M.B.B.S. 2004 batch – Amala Institute of Medical Sciences, Thrissur, Kerala.
  • D.N.B. Radiation Oncology, 2012 batch – Rajiv Gandhi Cancer hospital and research centre, New Delhi.
  • E.C.M.O: Cleared ESMO examination in September 2017.
  • Fellow of Royal College of Radiologists (FRCR): Passed 3 subjects (Radiobiology and molecular biology, clinical pharmacology and medical statistics) of Part 1 as of date.


  • 2021 : Present : Consultant, Radiation Oncology, Rajiv Gandhi Cancer Institute & Research Centre, New Delhi
  • 2018 – 2021 : Consultant, Fortis Hospital, Shalimar Bagh, Delhi.
  • 2015 – 2018: Clinical Associate, Action Cancer Hospital, Delhi.
  • 2014: Observership in the department of radiation at All India Institute of Medical Sciences, New Delhi.
  • 2012 – 2015: DNB Resident in the department of radiation oncology at Rajiv Gandhi Cancer Institute and Research Centre, New Delhi.
  • 2012: PG Registrar in the department of radiation oncology at Christian Medical College (CMC) Vellore.
  • 2011: Tutor in the department of General Medicine at Karuna Medical College, Palakkad, Kerala.
  • 2004 – 2010: MBBS and internship at Amala Institute of Medical Sciences, Thrissur, Kerala.

Professional Journey


  • Moderator of best poster presentation competition – virtual symposium on nutrition in cancer care & management of mucositis – February 2021
  • Invited speaker – 1 hour session, know cancer better- cancer awareness campaign for general public – conducted by Centre for India Studies, Kuwait – 4th December 2020.
  • Moderator of panel discussion – Updates in management of GBM – 3rd September 2020.
  • Panelist-Recent updates in management of prostate cancer and covid 19 – 31st July 2020.
  • Invited speaker – Radical / SBRT for oligometastatic breast cancer – DBOG meet at Jaypee Hospital, Noida – February 2019.
  • Invited speaker – Local therapy for oligometastatic NSCLC, is there a benefit?. World Cancer congress, 29th April 2018, New Delhi, India.
  • ESMO preceptorship and travel grant – Singapore – November 2018.
  • Invited speaker – Re-Irradiation for recurrent head and neck cancer in the IMRT era. Medical Physics day lecture series. 7th Nov 2016, Nagarjuna Hospital, Vijayawada, India.
  • Poster presentation – To measure interfractional variations in head and neck cancer patients by IGRT and its impact on dose volume histogram; 14th RGCON – Changing landscapes in head and neck oncology – future and beyond, Feb 2015, New Delhi, India.
  • Poster presentation – A randomized study to compare IMRT using conventional fractionation schedule with IMRT using simultaneous modulated accelerated radiotherapy schedule in locally advanced head and neck cancers – An interim analysis; 14th RGCON – Changing landscapes in head and neck oncology – future and beyond, Feb 2015, New Delhi, India.
  • Trilateral debate on locoregional therapies in metastatic breast cancer – medical, surgical and radiation perspectives – Spoken in favour of “locoregional radiotherapy in metastatic carcinoma breast”. Delhi NCR Oncology Forum, 7th Jan 2015, New Delhi, India.
  • Twice received best topic presentation awards in Tumour Board meetings at RGCI and RC in the year 2013 and 2014.
  • Oral Presentation – Predictive factors of pathological response to neoadjuvant 0chemoradiotherapy in locally advanced carcinoma rectum; 12th RGCON – “Changing Scenario in Colorectal Cancer”, Feb 2013, New Delhi, India.
  • Ex-Vice President of Alumni association of Amala Institute of Medical Sciences (AIMSAAT) for the period 2011 to 2014.
  • Have passed all the MBBS subjects scoring First Class marks in a single attempt.
  • Oral Presentation –Study of risk factors of coronary heart disease among adults aged above 25 years in rural communities in central Kerala; 53rd national conference of Indian public health association, Jan 2009, Bangalore, India.
  • Oral Presentation– Study on admission profile and outcome in medical intensive care unit in Central Kerala; 4th annual INDO-US Emergency Medicine Summit, Oct 2008, Mangalore, India.


  • First prize in soft tissue sarcoma quiz – 2nd international symposium on sarcoma management – April 2016
  • Silver medal for the final university (Calicut) exam in Obstetrics and Gynaecology subject.
  • Best paper presentation award (oral presentation category) in RGCON 2013.


  • Sukanya Semwal, Jaskaran Singh Sethi, Munish Gairola, David K Simson, Rajender Kumar, Ankit Goyal, Apoorv Vashistha, Ankit Kumar, Palak Goel. Evaluation of response rate of chemo-radiation and brachytherapy in patients with locally advanced carcinoma cervix in a tertiary care center. International Journal of Research in Medical Sciences. 2020 Mar; 8(4): 1361.
  • David K Simson, Swarupa Mitra, Parveen Ahlawat, Upasna Saxena, Manoj Kumar Sharma, Sheh Rawat, Harpreet Singh, Babita Bansal, Lalitha Kameshwari Sripathi, Aditi Tanwar; Prospective study of neoadjuvant chemoradiotherapy using IMRT and 5 Flurouracil for locally advanced rectal cancer – toxicities and response evaluation. Cancer Man Cancer Manag Res. 2018 Mar;10:519-526.
  • David K Simson, Sruthy P Kumar, Babita Bansal Singh, Lalitha Kameshwari, Parveen Ahlawat, S Prabhakar, Harpreet Singh, Manish Pandey, P Loganathan; Dosimetric comparison of Intensity Modulated Radiotherapy (IMRT) and Volumetric Modulated Arc Therapy (VMAT) for Gastric cancer. Asian Journal of Radiation Oncology. 2017 Jan-Jun;1:10-17.
  • Lalitha Kameshwari, Parveen Ahlawat, David K Simson, Chiraranjan Khadanga, Lakshmi pathikamarsu, Shital Kumar Surana, Harpreet Singh; Cardiac dose reduction with Deep-Inspiratory Breath Hold technique of radiotherapy for left sided breast cancer. J Med Phys. 2017 Jul-Sep; 42(3):123-127.
  • Parveen Ahlawat, Sheh Rawat, Anjali Kakria, Bharti Devnani, Inderjit Kaur Wahi, David K Simson; Reirradiation with IMRT for recurrent head and neck cancer: A single-institutional report on disease control, survival and toxicity. Rep PractOncolRadiother. 2017 Jul –Aug;22(4):331-339.
  • David K Simson; Conformal radiotherapy in rectal cancer: a dosimetric review. Int J Res Med Sci. 2017 Jan;5(1):08-12.
  • David K Simson, Swarupa Mitra, Parveen Ahlawat, Manoj Kumar Sharma, Girigesh Yadav, Maninder Bhushan Mishra; Dosimetric Comparison between Intensity Modulated Radiotherapy and 3 Dimensional Conformal Radiotherapy in the Treatment of Rectal Cancer. Asian Pac J Cancer Prev. 2016 Nov 1;17(11):4935-4937.
  • Swarupa Mitra, Manoj Kumar Sharma, Upasna Saxena, David K Simson, Manindra Mishra, Sabeena Kataria, Himanshu Srivastav; ‘Hopes and hypes with image based brachytherapy: an indian experience with 53 patients. Can it be the standard yet?. Abstract publication. Asia Pac J ClinOncol. 2014 Dec;10:116.
  • Swarupa Mitra, Anurag Mehta, Sunil Kumar Gupta, Anila Sharma, Robert Louis , Manoj Kumar Sharma, Upasna Saxena, David K Simson, Abhinav Dewan; Primary Gastric Burkitt’s Lymphoma – Case report and literature review. Rare Tumors. 2014 Oct 27; 6(4): 5300.
  • Manoj Kumar Sharma, Swarupa Mitra, Upasna Saxena, Maninder Bhushan, Himanshu Shrivastava, David K Simson, Abhinav Dewan, Deepika Chauhan; Is volumetric modulated arc therapy (RapidArc) better than intensity modulated radiotherapy for gynecological malignancies? A dosimetric comparison. J Cancer Res Ther.2014 Oct-Dec;10(4):883-8.
  • David K Simson, Swarupa Mitra, Manoj Kumar Sharma, et al; A prospective study to evaluate the predictive factors, dosimetry and pathological response to neoadjuvant chemoradiotherapy in locally advanced rectal carcinoma by conformal radiotherapy techniques. Abstract publication. Indian J Cancer. 2013 Nov;50 (supplement1):S54.
  • Alvin George, Grace George, David K Simson, T P Antony. A cross sectional analysis on the clinical presentation and outcome of H1N1 influenza patients in a tertiary care hospital in Central Kerala. International Journal of Advances in Medicine. 2019 Mar.6(2).


  • eLORA number: 16-03842
  • ESMO member: ID – 536694
  • Lifetime member of Delhi Oncology Forum
  • Association of Radiation Oncologists’ of India (AROI) : LM 1922
  • Travancore Cochin Medical Council – 42469
  • Tamilnadu Medical Council – 95814
  • Delhi Medical Council – 59473
  • Member of Continuing Medical Education-Thrissur Medical College Alumni Association( TMCAA)
  • Member of Alumni association of Amala Institute of Medical Sciences (AIMSAAT)

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Rajiv Gandhi Cancer Institute and Research Centre is today counted amongst Asia’s premier exclusive cancer centres that offer unique advantage of cutting edge technology, put to use by renowned super specialists. This potent combination of man and machine ensures world-class cancer care to not only patients from India, but also from the neighboring SAARC countries and others.

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