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Best Radiation Oncologists for External Beam Radiotherapy in Chennai, India

This page lists 4 external beam radiotherapy doctors in Chennai, India. Review each doctor's experience, specialty and hospital, then contact our care team for help with the next step.

Quick answer

This page lists 4 external beam radiotherapy doctors in Chennai, India. Review each doctor's experience, specialty and hospital, then contact our care team for help with the next step.

About External Beam Radiotherapy doctors in Chennai, 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.

External Beam Radiotherapy doctors

Image not available Featured

Dr. Rakesh Jalali

MBBS, MD
Senior Consultant — Radiation Oncology · Specialty: Radiation Oncologist
Apollo Proton Cancer Centre Chennai, India30+ Years experience
Why consider this doctor?
  • 30+ years of experience in Radiation Oncologist
  • Senior Consultant — Radiation Oncology, Apollo Proton Cancer Centre, Chennai, India — Present
  • Consultant Radiation Oncologist, Tata Memorial Hospital, Mumbai, India — Prior to Apollo appointment
Expertise & Procedures
  • Proton Beam Therapy
  • Intensity-Modulated Radiation Therapy (IMRT)
  • Stereotactic Radiosurgery (SRS)
  • Stereotactic Body Radiation Therapy (SBRT)
  • Image-Guided Radiation Therapy (IGRT)
View all procedures →
Radiation Oncologist Experience: 30+ YearsHospital Affiliation: Apollo Proton Cancer CentreHospital accreditation: JCI, NABH
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Image not available

Dr. Sapna Nangia

MBBS, MD (Radiotherapy/Radiation Oncology)
Senior Consultant — Radiation Oncology · Specialty: Radiation Oncologist
Apollo Proton Cancer Centre Chennai, India33+ Years experience
Why consider this doctor?
  • 33+ years of experience in Radiation Oncologist
  • Senior Consultant — Radiation Oncology, Apollo Proton Cancer Centre, Chennai, India (Present)
  • Consultant, Apollo Hospitals, Delhi (Affiliated)
Expertise & Procedures
  • Intensity-Modulated Radiation Therapy (IMRT)
  • 3D Conformal Radiotherapy
  • Image-Guided Radiation Therapy (IGRT)
  • Stereotactic Body Radiation Therapy (SBRT)
  • Stereotactic Radiosurgery (SRS)
View all procedures →
Radiation Oncologist Experience: 33+ YearsHospital Affiliation: Apollo Proton Cancer CentreHospital accreditation: JCI, NABH
View Profile Book a Consultation
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Dr. Srinivas Chilukuri

MBBS, MD (Radiation Oncology), PDCR
Senior Consultant — Radiation Oncology · Specialty: Radiation Oncologist
Apollo Proton Cancer Centre Chennai, India22+ Years experience
Why consider this doctor?
  • 22+ years of experience in Radiation Oncologist
  • Senior Consultant, Radiation Oncology — Apollo Proton Cancer Centre, Chennai, Present
  • Consultant Medical Affairs — Apollo Proton Cancer Centre, Chennai
Expertise & Procedures
  • Proton Beam Therapy
  • Stereotactic Radiosurgery (SRS)
  • Stereotactic Body Radiation Therapy (SBRT)
  • Intensity-Modulated Radiation Therapy (IMRT)
  • Image-Guided Radiation Therapy (IGRT)
View all procedures →
Radiation Oncologist Experience: 22+ YearsHospital Affiliation: Apollo Proton Cancer CentreHospital accreditation: NABH, JCI
View Profile Book a Consultation
Image not available

Dr. V. Balasundaram

MBBS, MD (Radiation Therapy)
Head of Department & Clinical Lead — Radiation Oncology · Specialty: Radiation Oncologist
Dr. Rela Institute & Medical Centre Chennai, India30+ Years experience
Why consider this doctor?
  • 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
Expertise & Procedures
  • Image-Guided Intensity-Modulated Radiation Therapy (IMRT)
  • External Beam Radiotherapy (EBRT)
  • Intraluminal Brachytherapy
  • Stereotactic Body Radiation Therapy (SBRT)
  • Stereotactic Radiosurgery (SRS)
View all procedures →
Radiation Oncologist Experience: 30+ YearsHospital Affiliation: Dr. Rela Institute & Medical CentreHospital accreditation: NABH, NABL
View Profile Book a Consultation

Hospitals where these doctors practise

Apollo Hospitals, Greams Road🇮🇳 Chennai, India
Starting from$3,000

Apollo Hospitals, Greams Road

Est. 1983
JCI — Joint Commission International accreditationNABH — National Accreditation Board for Hospitals & Healthcare Providers accreditation
External Beam RadiotherapyRadiation OncologyCardiac SurgeryCardiology
2+
Doctors for External Beam Radiotherapy
4.7
125 reviews
560+
Beds
43+
Years Since Founded
Dr. Rakesh JalaliDr. Sapna Nangia
View Hospital Profile Enquire / Get Free Opinion
Apollo First Med Hospitals, Kilpauk🇮🇳 Kilpauk, Chennai, India
Starting from$3,000

Apollo First Med Hospitals, Kilpauk

Est. 2002
NABH — National Accreditation Board for Hospitals & Healthcare Providers accreditationJCI — Joint Commission International accreditation
External Beam RadiotherapyRadiation OncologyCardiac SciencesOrthopedics
1+
Doctors for External Beam Radiotherapy
4.4
76 reviews
80+
Beds
24+
Years Since Founded
Dr. Srinivas Chilukuri
View Hospital Profile Enquire / Get Free Opinion
Dr. Rela Institute and Medical Centre🇮🇳 Chennai, India
Starting from$3,000

Dr. Rela Institute and Medical Centre

Est. 2018
NABH — National Accreditation Board for Hospitals & Healthcare Providers accreditationNABL — National Accreditation Board for Testing and Calibration Laboratories accreditation
External Beam RadiotherapyRadiation OncologyCardiac SurgeryCardiology
1+
Doctors for External Beam Radiotherapy
4.7
108 reviews
450+
Beds
8+
Years Since Founded
Dr. V. Balasundaram
View Hospital Profile Enquire / Get Free Opinion

Why consider treatment in India?

Many international patients consider India for colorectal cancer 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.

About the Procedure

What is External Beam Radiotherapy?

External Beam Radiotherapy (EBRT) uses precisely targeted high-energy X-ray beams from a machine outside the body to destroy cancer cells or shrink tumors in the rectum or colon area. It is commonly used before surgery (neoadjuvant) to shrink a rectal tumor, after surgery (adjuvant) to eliminate residual cells, or for palliative symptom control in advanced colorectal cancer. Treatment is typically delivered as a series of short daily sessions over several weeks under the guidance of a radiation oncologist.

Who may be considered?

External Beam Radiotherapy may be considered after a qualified specialist reviews your reports and medical history. Suitability varies from person to person and must be assessed by your treating doctor.

How does it work?

Uses CT-based 3D imaging to shape radiation beams to the tumor's exact shape, minimizing exposure to surrounding healthy tissue such as the bladder and small bowel.

3 approaches available for this procedure:

3D Conformal Radiotherapy (3D-CRT)

Standard Option

Uses CT-based 3D imaging to shape radiation beams to the tumor's exact shape, minimizing exposure to surrounding healthy tissue such as the bladder and small bowel.

Comprehensive Investigations

Estimated cost: $300 - $700

CT simulation scan, MRI pelvis, CBC, kidney and liver function tests, tumor marker (CEA), ECG

Treatment / Procedure Estimate

Estimated cost in India: $3,000 - $5,500

Stay in India

Pre-procedure stay (outside hospital): ~2-3 days
Hospitalisation: ~25-28 sessions (outpatient)
Recovery period (outside hospital): ~5-7 days recommended
Total stay: approx 35-40 days

Usually Included in Hospital Package

  • CT simulation and treatment planning
  • Daily radiotherapy sessions per protocol
  • Radiation oncologist consultations
  • Basic supportive medications
  • Weekly review during treatment

Usually Not Included

  • Accommodation for extended treatment weeks
  • Chemotherapy given concurrently (if prescribed)
  • Post-treatment surgery costs
  • Travel and visa expenses
  • Management of severe side effects requiring admission

Recovery and follow-up

Most patients tolerate daily sessions with mild fatigue, skin irritation, or bowel changes that typically resolve within a few weeks after completing treatment; regular follow-up scans and oncologist reviews are scheduled at set intervals post-treatment.

Risks

Potential risks include skin irritation, fatigue, diarrhea, bladder irritation, and, less commonly, long-term bowel or fertility effects depending on radiation dose and field.

Alternatives

Depending on tumor stage and location, alternatives may include surgery alone, chemotherapy alone, combined chemoradiotherapy, or brachytherapy; the suitable option is determined by the multidisciplinary tumor board.

What we need to prepare a formal estimate

Share whatever you have — the care team will confirm the final checklist after reviewing your case.

Reports required

  • Colonoscopy report with biopsy/histopathology results
  • CT scan of abdomen and pelvis
  • MRI pelvis (for rectal cancer staging)
  • PET-CT scan (if available, for metastasis assessment)
  • Tumor marker report (CEA)
  • Prior surgery or chemotherapy summary (if any)
  • Recent blood work (CBC, LFT, RFT)
  • List of current medications and comorbidities

Patient information needed

  • Full name, age, and gender
  • Cancer stage and site (colon vs rectum)
  • History of prior surgery, chemotherapy, or radiotherapy
  • Current symptoms (bleeding, pain, bowel changes)
  • Comorbid conditions (diabetes, cardiac disease, etc.)
  • Allergy history
  • Performance status / mobility level
  • Preferred treatment start date and travel companion details

Costs shown are indicative planning estimates based on typical pricing across leading Indian hospitals. They are not a quote — actual pricing depends on your case complexity, hospital choice, and length of stay. Share your reports for a personalized estimate.

Want a formal estimate?

Share your reports and patient information so our care coordination team can review your case.

How this directory is built

Doctors are matched using the specialty, location, condition (External Beam Radiotherapy) and procedure (External Beam Radiotherapy) recorded in their profiles. Inclusion is not an endorsement and does not guarantee a treatment outcome.

Need help with the next step?

Share your needs with our care coordination team for information about doctors and hospitals.

Common questions

FAQs about External Beam Radiotherapy in Chennai, India

What is Colorectal cancer?
Colorectal cancer is a malignancy arising from the inner lining of the colon or rectum, most often developing from adenomatous polyps that undergo cancerous change over time. It encompasses both colon cancer and rectal cancer, which share many features but may differ in their surgical and treatment approach.
What are the symptoms and health risks of Colorectal cancer?
Common symptoms include a persistent change in bowel habits (such as diarrhoea, constipation, or narrowing of stools), rectal bleeding or blood in the stool, abdominal cramping or discomfort, a feeling that the bowel does not empty completely, unexplained weight loss, and fatigue related to anaemia from chronic blood loss. In earlier stages, many people have no noticeable symptoms at all, which underlines the importance of routine screening for eligible individuals. The presence or absence of these symptoms alone is not sufficient to confirm or rule out a diagnosis, and a thorough clinical evaluation is always required.
How is Colorectal cancer diagnosed?
Diagnosis typically begins with a detailed medical and family history, a physical examination including digital rectal examination, and laboratory tests such as a full blood count and carcinoembryonic antigen (CEA) level. Colonoscopy is the definitive diagnostic procedure, allowing direct visualisation of the bowel lining and biopsy of any suspicious lesion for histological confirmation. Once cancer is confirmed, staging — commonly using CT scans of the chest, abdomen and pelvis, and sometimes MRI (particularly for rectal cancer) or PET-CT — is carried out to determine whether the disease is localised (Stage I–II), involves regional lymph nodes (Stage III), or has spread to distant sites (Stage IV), which directly guides treatment planning.
How is Colorectal cancer treated?
Treatment is highly individualised and depends on the cancer's location, stage, histological type, molecular markers (such as KRAS, NRAS, BRAF, and microsatellite instability status), and the patient's overall health. Early-stage disease may be managed with surgical resection alone, while more advanced cases often require a combination of surgery, chemotherapy, targeted therapy, and in some situations immunotherapy or radiotherapy (the latter particularly for rectal cancer). All treatment decisions should be made by a qualified multidisciplinary team following thorough individual assessment.
Can Colorectal cancer be treated without a procedure?
Non-surgical options play an important role in colorectal cancer care: chemotherapy regimens (such as FOLFOX or FOLFIRI) are used both as adjuvant treatment after surgery and as primary treatment for metastatic disease; targeted therapies (such as anti-VEGF or anti-EGFR agents) and immunotherapy (including checkpoint inhibitors for tumours with high microsatellite instability) may be recommended based on molecular profiling. For some patients with very early, superficial rectal lesions, endoscopic resection without open surgery may be appropriate. However, for the majority of confirmed colorectal cancer cases, surgery is a central component of curative-intent treatment, and whether a non-surgical pathway is suitable must be determined by a specialist team reviewing each individual case.
When is External Beam Radiotherapy considered for Colorectal cancer?
External Beam Radiotherapy may be considered only when it is appropriate for the confirmed diagnosis and the expected benefit outweighs the individual risks. The decision may depend on symptom severity, investigation results, previous treatment, overall health and the patient's goals. A specialist should discuss alternatives and recovery before any procedure is planned.
Which doctor treats Colorectal cancer?
Colorectal cancer is typically evaluated and managed by a surgical oncologist with colorectal expertise and a medical oncologist working within a multidisciplinary team that may also include a radiation oncologist, a gastroenterologist, a radiologist, and a pathologist. For rectal cancer in particular, a colorectal surgeon experienced in total mesorectal excision and related techniques is an important consideration.
How do I choose a doctor for Colorectal cancer?
When comparing providers, look for a surgeon with demonstrable experience in colorectal cancer resection and minimally invasive (laparoscopic or robotic) techniques, and confirm that the centre offers true multidisciplinary tumour board review, access to medical oncology and molecular testing, and a clear plan for post-treatment surveillance and follow-up.
What documents do international patients need to share for a medical evaluation?
Share a concise medical summary, symptom timeline, previous diagnoses, investigation and imaging reports, procedure or biopsy reports where relevant, current medicines, allergies and related treatment records. Provide clear copies with translations when needed. The reviewing doctor may request additional information before giving an opinion.
How does GAF Healthcare help international patients plan treatment in India?
Our care coordination team can review the initial information, help identify suitable doctors and hospitals, request a medical opinion where available, explain next steps and indicative cost information, and support practical planning before travel. A remote opinion does not replace an in-person examination or emergency care.
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