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“My guiding principle is; the right care, for the right patient, at the right time. To be delivered with compassion and respect.”

Provider Bio down arrow

Dr. Sanjay Kumar, Electrophysiologist, specializes in treating arrhythmias, which are abnormally slow or fast heart rhythms. 


Arrhythmias, can cause dizziness, palpitations, chest pain or loss of consciousness, which can lead to sudden cardiac death.

He joined Marshfield Clinic Health System in 2014.

Dr. Kumar offers interventions like implantation of cardiac pacemakers or defibrillators, or ablation therapy for atrial and ventricular arrhythmias, as well as counseling, lifestyle modification and drug therapies. “I want to help my patients reach their health goals and enjoy an active lifestyle. I work to alleviate their anxiety and answer questions,” he said.

“I have been fortunate to visit many places in the United States. My best experiences have been in the Midwest where living and work are complemented by superb communities and natural beauty. Wausau enjoys the fortunate combination of large city amenities, easy access to the great Northwoods and small-town hospitality,” said Dr. Kumar.

In his free time, Dr. Kumar likes spending time with his wife and daughter reading, swimming, playing tennis, squash or racquetball and going for walks. “My daughter and I love painting and doing art projects together. I also enjoy books related to statistics, history, psychology and philosophy,” said Dr. Kumar.

Dr. Kumar received his medical degree from the Institute of Medical Sciences, BHU, in Varanasi, India. He then completed his internship and residency in internal medicine at SUNY Downstate Medical Center in New York, where he also completed his fellowships in cardiology and electrophysiology. He specializes in hypertension, nuclear cardiology, echocardiography, cardiac rhythm device management and advanced electrophysiology procedures.

Professional Summary down arrow

  • Medical School
    Banaras Hindu University - Institute of Medical Sciences Varanasi, Uttar Pradesh, India, M.D. 1995

    Internship
    State University of New York - Downstate Medical Center Brooklyn, NY, United States, Internal Medicine 1998

    Residency
    State University of New York - Downstate Medical Center Brooklyn, NY, United States, Internal Medicine 2000

    Fellowship
    State University of New York - Downstate Medical Center Brooklyn, NY, United States Cardiology 2013

    State University of New York - Downstate Medical Center Brooklyn, NY, United States Electrophysiology 2014

  • Professional Societies
    American College of Cardiology American College of Physicians American Heart Association American Society of Hypertension Heart Rhythm Society

    Board Certifications
    Cardiovascular Disease: 2013 Electrophysiology: 2014 Internal Medicine: 2000, recertified 2010

    State Licenses
    Ohio Wisconsin

Patient Ratings down arrow

4.7
out of 5 (82 ratings, 18 comments)
4.6
Provider explanations of my problem
4.7
Provider concern for my questions
4.6
Provider's efforts to include me in treatment decisions
4.7
Provider's discussion of proposed treatment
4.6
My likelihood of recommending this provider

Patient Comments down arrow

Comments are also gathered from the Press Ganey patient satisfaction survey and displayed in their entirety with the exception of any language that may be considered slander, libel or contain private health information, which will be removed prior to publishing.
Comments are from Press Ganey surveys. Slander, libel and private health information are removed.
Sort by:
May 22, 2020
Dr. Kumar is the best!
June 11, 2020
Dr. Kumar is exceptionally caring!
June 30, 2020
Everybody was wonderful! I would recommend THEM ALL to everyone!
July 29, 2020
Doctor informed me about options and respected my choices.
August 24, 2020
Dr. Kumar seems well knowledgeable about my cardiac issues. He was quick to point out an issue with a newly prescribed med. Instead he suggested a medical procedure to try to fix the problem I have. Lab tests, EKG's & venous scans were completed prior to any procedure done. He is very thorough.
August 28, 2020
dr. Kumar did a great job as he always does. Marshfield clinic is very fortunate to have him on your staff!!
September 25, 2020
We are very fortunate to have this health facility in our community.
October 1, 2020
Very thorough.
October 26, 2020
Good experience. I love this doctor and am always glad to see him.
November 9, 2020
Compassionate.
December 18, 2020
I am very impressed with the dr.'s knowledge of my condition and I feel comfortable with his care.
February 12, 2021
Dr. Kumar was excellent.
March 3, 2021
Excellent experience.
May 10, 2021
Yes I would tell people about this hospital.
May 25, 2021
Dr. Kumar is the best.
April 2, 2020
Very satisfied.
January 29, 2021
Didn't explain detail what plan was.
September 15, 2020
No rating given
Dr. Kumar did surgery to stop my [problem] and it was a total success. Haven't had one problem since!
September 15, 2020
No rating given
Dr. Kumar did surgery to stop my [problem] and it was a total success. Haven't had one problem since!
January 29, 2021
Didn't explain detail what plan was.
April 2, 2020
Very satisfied.
May 22, 2020
Dr. Kumar is the best!
June 11, 2020
Dr. Kumar is exceptionally caring!
June 30, 2020
Everybody was wonderful! I would recommend THEM ALL to everyone!
July 29, 2020
Doctor informed me about options and respected my choices.
August 24, 2020
Dr. Kumar seems well knowledgeable about my cardiac issues. He was quick to point out an issue with a newly prescribed med. Instead he suggested a medical procedure to try to fix the problem I have. Lab tests, EKG's & venous scans were completed prior to any procedure done. He is very thorough.
August 28, 2020
dr. Kumar did a great job as he always does. Marshfield clinic is very fortunate to have him on your staff!!
September 25, 2020
We are very fortunate to have this health facility in our community.
October 1, 2020
Very thorough.
October 26, 2020
Good experience. I love this doctor and am always glad to see him.
November 9, 2020
Compassionate.
December 18, 2020
I am very impressed with the dr.'s knowledge of my condition and I feel comfortable with his care.
February 12, 2021
Dr. Kumar was excellent.
March 3, 2021
Excellent experience.
May 10, 2021
Yes I would tell people about this hospital.
May 25, 2021
Dr. Kumar is the best.
April 2, 2020
Very satisfied.
May 22, 2020
Dr. Kumar is the best!
June 11, 2020
Dr. Kumar is exceptionally caring!
June 30, 2020
Everybody was wonderful! I would recommend THEM ALL to everyone!
July 29, 2020
Doctor informed me about options and respected my choices.
August 24, 2020
Dr. Kumar seems well knowledgeable about my cardiac issues. He was quick to point out an issue with a newly prescribed med. Instead he suggested a medical procedure to try to fix the problem I have. Lab tests, EKG's & venous scans were completed prior to any procedure done. He is very thorough.
August 28, 2020
dr. Kumar did a great job as he always does. Marshfield clinic is very fortunate to have him on your staff!!
September 15, 2020
No rating given
Dr. Kumar did surgery to stop my [problem] and it was a total success. Haven't had one problem since!
September 25, 2020
We are very fortunate to have this health facility in our community.
October 1, 2020
Very thorough.
October 26, 2020
Good experience. I love this doctor and am always glad to see him.
November 9, 2020
Compassionate.
December 18, 2020
I am very impressed with the dr.'s knowledge of my condition and I feel comfortable with his care.
January 29, 2021
Didn't explain detail what plan was.
February 12, 2021
Dr. Kumar was excellent.
March 3, 2021
Excellent experience.
May 10, 2021
Yes I would tell people about this hospital.
May 25, 2021
Dr. Kumar is the best.
May 25, 2021
Dr. Kumar is the best.
May 10, 2021
Yes I would tell people about this hospital.
March 3, 2021
Excellent experience.
February 12, 2021
Dr. Kumar was excellent.
January 29, 2021
Didn't explain detail what plan was.
December 18, 2020
I am very impressed with the dr.'s knowledge of my condition and I feel comfortable with his care.
November 9, 2020
Compassionate.
October 26, 2020
Good experience. I love this doctor and am always glad to see him.
October 1, 2020
Very thorough.
September 25, 2020
We are very fortunate to have this health facility in our community.
September 15, 2020
No rating given
Dr. Kumar did surgery to stop my [problem] and it was a total success. Haven't had one problem since!
August 28, 2020
dr. Kumar did a great job as he always does. Marshfield clinic is very fortunate to have him on your staff!!
August 24, 2020
Dr. Kumar seems well knowledgeable about my cardiac issues. He was quick to point out an issue with a newly prescribed med. Instead he suggested a medical procedure to try to fix the problem I have. Lab tests, EKG's & venous scans were completed prior to any procedure done. He is very thorough.
July 29, 2020
Doctor informed me about options and respected my choices.
June 30, 2020
Everybody was wonderful! I would recommend THEM ALL to everyone!
June 11, 2020
Dr. Kumar is exceptionally caring!
May 22, 2020
Dr. Kumar is the best!
April 2, 2020
Very satisfied.

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