This page lists 5 radiation oncology doctors in India. Review each doctor's experience, specialty and hospital, then contact our care team for help with the next step.
About Radiation Oncology doctors in India
This directory is based on doctors currently listed in GAF Healthcare's registry. Clinical suitability varies by patient; a doctor should review your history and investigations before any treatment decision.
Radiation Oncology doctors
FeaturedDr. Christopher John
- 14+ years of experience in Radiation Oncologist
- Visiting Consultant, Radiation Oncology — Rela Hospital, Chennai, India — Present
- Consultant Radiation Oncologist — Rela Hospital Cancer Centre, Chennai, India
- Stereotactic Radiosurgery (SRS) for brain tumours
- Image-Guided Intensity-Modulated Radiation Therapy (IMRT)
- Stereotactic Body Radiation Therapy (SBRT)
- CyberKnife radiosurgery
- Intracavitary and interstitial brachytherapy

Dr. K. R. Prasanna Kumar
- 18+ years of experience in Radiation Oncologist
- Senior Consultant and Visiting Radiation Oncologist, Rela Hospital Cancer Centre, Chennai — Present
- Consultant Radiation Oncologist, Apollo Speciality Hospital, Chennai
- Image-Guided Radiation Therapy (IMRT)
- CyberKnife Radiosurgery
- Gamma Knife Radiosurgery
- Stereotactic Radiosurgery (SRS)
- Stereotactic Body Radiation Therapy (SBRT)

Dr. M. Janarthinakani
- 25+ years of experience in Radiation Oncologist
- Senior Consultant, Radiation Oncology — Rela Hospital, Chennai
- Consultant and Educator — Cancer Institute (WIA), Adyar, Chennai
- Image-Guided Radiation Therapy (IMRT)
- Stereotactic Body Radiation Therapy (SBRT)
- Brachytherapy for Cervical and Rectal Cancers
- 3D Conformal Radiation Therapy
- Intensity-Modulated Radiation Therapy Planning

Dr. S. Usha
- 14+ years of experience in Radiation Oncologist
- Radiation Oncologist, Cancer Centre, Rela Institute & Medical Centre, Chennai — Present
- Over 14 years of experience in radiotherapy and chemotherapy for solid tumours
- Image-Guided Radiation Therapy (IMRT)
- Brachytherapy and Intracavitary Application (ICA)
- Stereotactic Body Radiation Therapy (SBRT)
- Total Body Irradiation (TBI)
- Vaginal Cylindrical Application (VCA)

Dr. V. Balasundaram
- 30+ years of experience in Radiation Oncologist
- Head of Department & Clinical Lead, Radiation Oncology, Dr. Rela Institute & Medical Centre, Chennai — Present
- Department Head & Full-Time Consultant, Radiation Oncology, V.S. Hospital, Chetpet, Chennai — October 2005 to April 2025
- Image-Guided Intensity-Modulated Radiation Therapy (IMRT)
- External Beam Radiotherapy (EBRT)
- Intraluminal Brachytherapy
- Stereotactic Body Radiation Therapy (SBRT)
- Stereotactic Radiosurgery (SRS)
Hospitals where these doctors practise
Dr. Rela Institute and Medical Centre
Why consider treatment in India?
Many international patients consider India for radiation oncology treatment for several reasons, including:
More affordable estimates
Competitive indicative costs compared with many other countries, for similar clinical standards.
Internationally accredited hospitals
Hospitals experienced in treating international patients.
Experienced specialists
Doctors who regularly manage similar cases.
Care coordination support
A team to help with planning, medical translation and follow-up.
How this directory is built
Doctors are matched using the specialty, location recorded in their profiles. Inclusion is not an endorsement and does not guarantee a treatment outcome.
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