Dr. Nanthakumar is quite possibly the best doctor I’ve ever interacted with. He was punctual, didn’t rush ,and listened to my concerns / questions. He was very throughout even drawing a diagram to help explain things! He had a sense of humour while still maintaining his sense of compassion. I left my appointment feeling confident that my health was in the right hands! Would highly recommend this doctor!

Submitted Feb. 15, 2024

Very thorough and explained my condition in layman’s terms. Could understand exactly what he was explaining to me. Very fortunate to have him as my heart specialist.

Submitted March 4, 2020

So easy to talk to, and will answer all of your questions. He explains what your future with your heart will entail. Very professional, very personable.

Submitted Jan. 27, 2020

Wonderful doctor staff was excellent and always made me feel safe and cared for excellent ablation thank you so much

Submitted Jan. 19, 2020

Fantastic. Took the worry out of a seemingly daunting procedure. Set my mind at ease, and procedure was a success. A real master of his craft. Explains everything so you always understand your options and risks. And listens! I’d say best doctor I’ve ever had.

Submitted May 11, 2019

Dr. Nanthakumar and his team are amazing. He is a blessing to me. Thank you for helping me to resume my normal life without worrying about my heart condition. You deserve 10+++ stars.

Submitted Nov. 8, 2018

I had my first visit with Dr Nanthakumar this morning. Office, team and doctor all awesome! Dr Nanthakumar explained everything at so I could understand, explained options, next steps and let me ask questions. Thank you!!

Submitted June 8, 2017

Dr. Nan is amazing, articulate and compassionate. I am so grateful to him for fixing me. He performed an ablation which finally fixed my PSVT. I have my life back and I am so grateful.

Submitted April 29, 2016

He's very informative, pleasant, caring. It's great that he works up here to make it convenient for north Toronto patients.Staff is great as well. Clean, modern facility.

Submitted Aug. 5, 2015

i had a rvot ablation wid doctor,m very much satisfied

Submitted June 25, 2015