
Highlights
Languages
- English
About Nikhil T. Sebastian
Emory Affiliation
Emory Clinic - School of Medicine Faculty
Emory Physician Group Practice
Emory Healthcare Network
Winship Cancer Institute of Emory University
Academic Title
Assistant Professor
Year Started Practicing
2020
About the Provider
A board certified radiation oncologist, Nikhil T. Sebastian, MD, specializes in the treatment of prostate and other genitourinary cancers, and lung cancer. He is skilled in Gamma Knife radiosurgery and treats patients at Emory Saint Joseph's Hospital and Emory Proton Therapy Center.
Dr. Sebastian received his medical degree from The Ohio State University in Columbus, Ohio, where he also completed his residency in radiation oncology.
Dr. Sebastian's research interests include clinical trial development, integration of novel therapeutics, and identification of prognostic biomarkers.
Interpretive Services
Academic Profile
Winship Cancer Institute Profile
Locations
- Winship Cancer Institute at Emory Saint Joseph's Hospita
- 5665 Peachtree Dunwoody Road, Erb Bldg, Ground Fl, Atlanta, GA 30342
- Get Directions
- phone: 404-778-1900
- Emory Proton Therapy Center
- 615 Peachtree Street Northeast, Atlanta, GA 30308
- Get Directions
- phone: 833-377-6866
Expertise
Education
- Residency: Ohio State University Medical Center, Radiation Oncology, 2020
- Internship: Riverside Methodist Hospital, Transitional Year, 2016
- Medical Education: The Ohio State University College of Medicine and Public Health, MD, 2015
Ratings & Reviews
4.9 out of 5
753 ratingsThe Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
- 5 out of 5 starsReviewed on 4/10/2026
Dr. Sebastian is an excellent oncologist. His communication skills are outstanding.
- 5 out of 5 starsReviewed on 4/6/2026
Dr Nakil Sebastian is the best.
- 5 out of 5 starsReviewed on 4/3/2026
I received excellent treatment and there was a lot of identification with my case.
- 5 out of 5 starsReviewed on 4/1/2026
Dr. Sebastian was extremely knowledgeable and confident. He gave us clear description on what to expect and was very informative. He is very passionate and caring. I feel very comfortable being treated by him.
- 5 out of 5 starsReviewed on 3/30/2026
It is very reassuring to know that there is healthcare that truly makes a difference and makes sure you feel valued and supported,
- 5 out of 5 starsReviewed on 3/27/2026
Dr Sabastian in the radiation department was my saving grace
- 5 out of 5 starsReviewed on 3/25/2026
So far, Doc Sebastian simply excellent. Great communicator, all questions answered.
- 5 out of 5 starsReviewed on 3/21/2026
My dictor provided me clear explanation of the treatment
- 5 out of 5 starsReviewed on 3/16/2026
Dr Sebastian and the team are awesome
- 5 out of 5 starsReviewed on 3/12/2026
Dr. Sebastian did an excellent job explaining the entire process and the side effects.
- 5 out of 5 starsReviewed on 3/6/2026
Dr. Sebastian was very professional and took the time to explain the entire treatment for the prostate cancer.
- 5 out of 5 starsReviewed on 2/22/2026
Great provider. Extremely helpful. Good advice and opinions.
- 5 out of 5 starsReviewed on 2/21/2026
Dr Sebatsslian has been extremely helpful.
- 5 out of 5 starsReviewed on 2/21/2026
Dr. Sebastian is a great communicator and shows empathy.
- 5 out of 5 starsReviewed on 2/7/2026
Open to questions and patient
- 5 out of 5 starsReviewed on 1/31/2026
Dr Sebastian has discussed all the available options with me, answered all my questions and suggested some optional services that I am grateful for.
- 5 out of 5 starsReviewed on 1/31/2026
Dr. Sebastian is a true professional who cares for the wellbeing of his patients.
- 5 out of 5 starsReviewed on 1/31/2026
Dr. Sebastian is an incredible asset to Emory and his Patients! Dr. Sebastian is very knowledgeable, professional and courteous. Everyone at the Emory Proton certain are very kind and attentive. I was comfortable and confident through my radiation treatment thanks to the trusted care of Dr. Sebastian and the Proton Center team
- 5 out of 5 starsReviewed on 1/30/2026
Excellent visit with Dr. He is the best in hisField of medicine.
- 5 out of 5 starsReviewed on 1/28/2026
Excellent care! Praying for an excellent outcome.
- 5 out of 5 starsReviewed on 1/22/2026
Good
- 5 out of 5 starsReviewed on 1/12/2026
We continue to use Emory Proton solely because of Dr Sebastian. He's both a ray of comforting sunshine and the consummate professional. I've never had a question he can't answer or a problem he can't solve. Emory would do well to allow him and his staff to thrive.
- 5 out of 5 starsReviewed on 1/11/2026
Dr. Sebastian always is polite, professional and extremely knowledgeable. He listens carefully to my questions and gave detailed answers in a manner that I could understand. He showed genuine concern about my fatigue as my cancer treatments continue.
- 5 out of 5 starsReviewed on 12/25/2025
Dr. Sebastian was excellent, in answering all my questions and communicating all details about my medical condition and treatment procedures.
- 5 out of 5 starsReviewed on 12/19/2025
Good experience
- 5 out of 5 starsReviewed on 12/15/2025
Very informative and answered any questions I had. Told me possible outcomes both good and bad
- 5 out of 5 starsReviewed on 12/10/2025
She's Best
- 5 out of 5 starsReviewed on 11/15/2025
Dr. Nikhil Sebastian is awesome gentleman.
- 5 out of 5 starsReviewed on 11/8/2025
They were very nice also listen my concern. Very helpful always.
- 5 out of 5 starsReviewed on 11/8/2025
Did great
- 5 out of 5 starsReviewed on 11/6/2025
Great communicator and attention to providing options, medical details etc..
- 5 out of 5 starsReviewed on 11/5/2025
Dr Sebastian explained treatment in clear terms that were easy to understand. Relatable. He, also, informed me of additional options I had been unaware of. Great visit. Left feeling comfortable.
- 5 out of 5 starsReviewed on 11/1/2025
I would rate the service sire, but I rate it as high as I can
- 5 out of 5 starsReviewed on 10/29/2025
Dr. Sebadtian at Winship was very professional who took his time to explain my cancer treatment and what to expect in side effects and was to treat them.
- 5 out of 5 starsReviewed on 10/25/2025
Excellent team
- 5 out of 5 starsReviewed on 10/19/2025
Dr. Sebastian is a fantastic listener and communicator, which makes me feel very lucky to have him as my doctor!
- 5 out of 5 starsReviewed on 10/18/2025
Doc n nurse were very helpful
- 5 out of 5 starsReviewed on 10/18/2025
Dr Sebastian is most through and professional but at the same time very personable and caring. One of the top medical professionals in my opinion.
- 5 out of 5 starsReviewed on 10/18/2025
Great
- 5 out of 5 starsReviewed on 9/30/2025
They were very professional
- 5 out of 5 starsReviewed on 9/28/2025
Dr. Sebastian is a rock star. He is competent, caring, and very professional.
- 5 out of 5 starsReviewed on 9/27/2025
Empathetic, knowledgeable, and trustworthy.
- 5 out of 5 starsReviewed on 9/27/2025
Sebastian is a very caring person
- 5 out of 5 starsReviewed on 9/25/2025
An amazing experience. Dr Sebastian showed empathy and compassion, and listened intently to me when I was talking.
- 5 out of 5 starsReviewed on 9/24/2025
Dr. Sebastian is the best! The team that works with him is awesome!
- 5 out of 5 starsReviewed on 9/20/2025
Very friendly and professional
- 5 out of 5 starsReviewed on 9/6/2025
Dr. Sabastion and I had a great conversation getting into some details on studies regarding exercise and cancer.
- 5 out of 5 starsReviewed on 9/6/2025
Good
- 5 out of 5 starsReviewed on 9/4/2025
Dr Sebastian is a very gracious doctor. I have a great deal of respect for his advice.
- 5 out of 5 starsReviewed on 8/31/2025
Doctor was very thorough and caring
- 5 out of 5 starsReviewed on 8/9/2025
He is a good physician, even if he is an Ohio State Alumni.
- 5 out of 5 starsReviewed on 8/9/2025
Doctor made sure that my wife and I were able to understand each facet of my opinions.
- 5 out of 5 starsReviewed on 7/29/2025
All good
- 5 out of 5 starsReviewed on 7/27/2025
He was caring and answered all questions so that my family and I could understand he is a great asset to your team
- 5 out of 5 starsReviewed on 7/20/2025
Thorough. Handled all my questions.
- 5 out of 5 starsReviewed on 7/19/2025
Good experience
- 5 out of 5 starsReviewed on 7/19/2025
All good!
- 5 out of 5 starsReviewed on 7/19/2025
Andrea, PA Cristina & Dr. Sebastian: All very Positive, Courteous, Professional, Knowledgeable and Respectful. My procedure became somewhat complicated and Cristina and Dr. Sebastian were calming, explained the situation and I couldn't ask for better care.
- 5 out of 5 starsReviewed on 6/30/2025
Dr. Sebastian stayed late to meet with me, which was greatly appreciated!
- 5 out of 5 starsReviewed on 6/26/2025
Dr. Sebastian, did a fantastic job of explaining my options for treatment and answering all my questions .
- 5 out of 5 starsReviewed on 6/21/2025
Dr Sebastian has become one of my favorite physicians ever
- 5 out of 5 starsReviewed on 5/3/2025
Excellent
- 5 out of 5 starsReviewed on 5/3/2025
I highly recommend world class care I received at Emory.
- 5 out of 5 starsReviewed on 4/24/2025
Very pleasant and concerned
- 5 out of 5 starsReviewed on 4/18/2025
I appreciated his positive attitude.
- 5 out of 5 starsReviewed on 4/11/2025
Exceptional positive experience.
- 5 out of 5 starsReviewed on 3/9/2025
Dr. Sebastian is a professional
- 5 out of 5 starsReviewed on 3/8/2025
Dr Sebastian shows care and concern for all of your questions and carefully explains issues and next steps in your care.
- 5 out of 5 starsReviewed on 2/21/2025
Both doctors I met with, radiologist and urologist, were very responsive to my questions and concerns. They took time to explain my treatment options and discussed the pros/cons of each option. I truly appreciated their directness as related to my cituation.
- 5 out of 5 starsReviewed on 2/8/2025
They discussed alternative ways for me to take my prescriptions to help my nausea better. So far it's helping! I would never have done this without their guidance. They are brilliant, they listen, they truly care! I'm in the absolute BEST hands!
- 5 out of 5 starsReviewed on 1/30/2025
Very knowledgeable and explain theProcess which made us feel welcomed
- 5 out of 5 starsReviewed on 1/25/2025
Dr. Sebastian is very patient, kind, and professional! I have complete confidence and trust in Dr. Sebastian.
- 5 out of 5 starsReviewed on 1/23/2025
Very good experience
- 5 out of 5 starsReviewed on 1/19/2025
Dr is excellent physician and specialist in his field and also very compassionate and excellent communicator!
- 5 out of 5 starsReviewed on 1/13/2025
I would recommend Dr. Sebastian to anyone in similar circumstance as I am in as the premier doctor in his field.
- 5 out of 5 starsReviewed on 12/24/2024
Dr. Sebastian is not only a brilliant and skilled physician he is extremely caring and listens; answers questions thiroughly
- 5 out of 5 starsReviewed on 12/11/2024
Excellent physician!
- 5 out of 5 starsReviewed on 12/7/2024
Dr Sebastian's thorough care is emblematic of Emory Proton's world class customer service
- 5 out of 5 starsReviewed on 12/6/2024
Dr. Sebastian was excellent! He was knowledgeable and communicative about the purpose of our visit. He was attentive and truly demonstrated sincerity for our concerns and direction of care. He was friendly and very approachable. I would recommend him to anyone.
- 5 out of 5 starsReviewed on 11/21/2024
Dr. Sebastian is stellar.I would've given him an even a higher rating than five
- 5 out of 5 starsReviewed on 11/19/2024
I had talked to many doctors over the course the last few weeks about my issue. Dr. Sebastian was by far the most informative and I felt confident with him. I even had a couple of additional questions over the weekend which she got back to me very quickly on.
- 5 out of 5 starsReviewed on 11/9/2024
Dr Sebastian and his staff re extremely professional, caring and concerning.
- 5 out of 5 starsReviewed on 11/7/2024
Knowledgeable and concern about the patient understanding of the details.
- 5 out of 5 starsReviewed on 11/6/2024
Dr Sebastian is an outstanding interviewer of prospective patients
- 5 out of 5 starsReviewed on 11/1/2024
This is a great doctor who has a lot of knowledge and cares about his patients. I am so glad I have him for my doctor.
- 5 out of 5 starsReviewed on 10/20/2024
Good
- 5 out of 5 starsReviewed on 10/20/2024
In addition to answering every question, Dr. Sebastian also had recommendations which I had not even considered. Since receiving my cancer diagnosis in December of 2022, I feel Dr. Sebastian is by far the best practioner I have encountered.
- 5 out of 5 starsReviewed on 10/19/2024
Dr Sebastian was very through with explanations regarding therapy. Clear and concise but always in a caring manner he presented risk/benefit of each step and the procedures. He paused after each procedural description to asm if I had questions the patiently answered each question. His calm and caring manner inspires confidence on the part of the patient.
- 5 out of 5 starsReviewed on 10/16/2024
As always, care provider was very concerning and very, very professional.
- 5 out of 5 starsReviewed on 10/16/2024
Everything is going , just as the doctor said
- 5 out of 5 starsReviewed on 10/3/2024
Dr Sebastian is a kind and professional doctor. I enjoy my time with him, and feel great trust in his care
- 5 out of 5 starsReviewed on 9/7/2024
Dr N Sebastian is always attentive and kind
- 5 out of 5 starsReviewed on 8/31/2024
Dr. Sebastian is a true professional, skilled, and caring for his patients. Cannot ask for any better care.
- 5 out of 5 starsReviewed on 8/8/2024
Dr Sebastian is awesome. Very helpful and informative. Excellent listener and provided great advice many times during my treatment. Dr Sebastian really represents what Winship Cancer Institute is all about.
- 5 out of 5 starsReviewed on 7/5/2024
Good
- 5 out of 5 starsReviewed on 7/5/2024
Dr Sebastian provided me with answers to all of my questions and thoroughly explained the treatment plan and all options for ongoing monitoring and treatment.
- 5 out of 5 starsReviewed on 7/4/2024
Dr Sabastian was thorough, compassionate,professional &caring. Can't say enough good things about Dr
- 5 out of 5 starsReviewed on 6/28/2024
Very good
- 5 out of 5 starsReviewed on 6/22/2024
I was very impressed how well Dr. Sebastian and his assistant had Informed themselves about my case.
- 5 out of 5 starsReviewed on 6/17/2024
It was apparent that Dr. Sebastian has read my entire medical record. This gave me a lot of confidence being his patient.
- 5 out of 5 starsReviewed on 6/17/2024
Dr Sebastian answered all my questions and included me appropriately in treatment decisions.
- 5 out of 5 starsReviewed on 6/16/2024
I feel SO fortunate to have Dr Sebastian as my physician at Emory Proton. From top to bottom, Emory Proton is a customer service beacon for other organizations to follow.
- 2 out of 5 starsReviewed on 6/10/2024
Dr Sebastian didn't listen or discuss anything. When I expressed concern for pain he said I have to go farther take a deep breath. From others I've spoken to this procedure usually isn't that painful. In theory the Ativan and Lidocaine should have helped but it seemed as if no medication had been administered. This was worse than other biopsies, colonoscopies or any other procedure I've had.
- 5 out of 5 starsReviewed on 6/8/2024
He did a great job Explaining my situation and gave good Answers when I ask him Questions
- 5 out of 5 starsReviewed on 6/2/2024
I am very satisfied and I would gladly recommend this clinic to anyone
- 5 out of 5 starsReviewed on 5/28/2024
Good experience, I was listed to during the consult.
- 5 out of 5 starsReviewed on 5/17/2024
Awesome people, very kind and considerate of your needs
- 5 out of 5 starsReviewed on 5/15/2024
I am not one to complete surveys, but in this case I am was looking forward to providing feedback. I left my consultation with Dr. Sebastian and his resident with a sense of complete assurance that I had just encountered 2 experts in the field of prostate cancer. They covered all the pertinent issues, several which I had not considered and provided clear and concise answers regarding my condition enabling me to make a much more informed decision on my treatment options. I greatly appreciate their involvement. they far and away exceeded my expectations
- 5 out of 5 starsReviewed on 5/1/2024
Ms Brenda was superb. Very good giving support during procedural
- 5 out of 5 starsReviewed on 5/1/2024
Dr. Sebastian Is exceptional caring about and listening to my concerns and explanations of my condition. Rather than turning as many patients as he can, he focuses on me and answers all my questions/concerns regardless of the time it takes. That trait more than any other is what patients care about in the reputation developed for the healthcare facility. He is excellent!
- 5 out of 5 starsReviewed on 4/27/2024
Excellent!
- 5 out of 5 starsReviewed on 4/27/2024
Best doctor ever.
