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Themistoklis Nissirios

Themistoklis Nissirios, MD

Cardiology

Accepting New Patients
Online Booking
Need help scheduling? Call (201) 689-3647

Highlights

Languages

  • English
  • Greek

Gender

Male

About

VMG Provider

Yes

Logo for Yes

Bio

What are some of the specific conditions you treat?

I treat all cardiac conditions for adult patients. Most specifically coronary artery disease, congestive heart failure, and cardiac arrhythmia, as well as hypertension, and hyperlipidemia.

What would you like patients to know about your approach to care?

I believe the most important function of a medical professional is to listen to their patient. First and foremost, patients need to understand how the heart works. I try to break down unfamiliar concepts, to concepts that every patient can understand. All my patients play an active role in the decision making process.

What inspired you to become a doctor?

I grew up on a small island in Greece, called Karpathos, where access to medical care was, and still to this day, is quite limited. What left an impression on me the most, was seeing people losing their life due to heart attacks and other forms of cardiac disease, and doctors not being able to do anything about it. I made it a mission to learn everything I could about the disease process and most importantly, prevention.

ColigoCare

ColigoCare is a network of physicians working collectively to provide the highest quality care to patients and the community

Logo for ColigoCare is a network of physicians working collectively to provide the highest quality care to patients and the community

Video

Locations

  1. VMG Cardiac Services - Paramus

Expertise

Education

  • Fellowship: Cooper University Hospital, Cardiology, 2009
  • Residency: Montefiore Medical Center, Internal Medicine, 2006
  • Internship: Montefiore Medical Center, Internal Medicine, 2004
  • Doctor of Medicine: Robert Wood Johnson Medical School, Medical Doctor, 2003
  • Bachelor of Arts: Rutgers University, Newark Campus, Biology, 1998

Ratings & Reviews

4.9 out of 5

413 ratings, 60 reviews

The 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.

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    5 out of 5 stars
    Reviewed on 3/23/2026

    Very patient and respectful with my questions and concerns

    5 out of 5 stars
    Reviewed on 3/20/2026

    Dr Nissirios is great.

    5 out of 5 stars
    Reviewed on 3/18/2026

    Doctor was excellent took his time and explained everything

    5 out of 5 stars
    Reviewed on 3/13/2026

    Always great too!

    5 out of 5 stars
    Reviewed on 3/6/2026

    Very confident providing exceptional service

    5 out of 5 stars
    Reviewed on 3/5/2026

    Good

    5 out of 5 stars
    Reviewed on 2/28/2026

    He listened to me and asked questions he made me feel very comfortable

    5 out of 5 stars
    Reviewed on 2/28/2026

    The staff and doctor were very pleasant and professional answering my questions.

    5 out of 5 stars
    Reviewed on 2/26/2026

    Left office feeling relieved and confident we are on the right track.

    5 out of 5 stars
    Reviewed on 2/13/2026

    Excellent attention

    5 out of 5 stars
    Reviewed on 2/5/2026

    Good experience

    5 out of 5 stars
    Reviewed on 1/30/2026

    The Doctor is perfect for [...].

    5 out of 5 stars
    Reviewed on 1/13/2026

    Dr. Nissirios is an excellent Cardiologist that we have known for over 20 years! He is trusted with both my and my husband's care.

    5 out of 5 stars
    Reviewed on 1/10/2026

    No complaints

    5 out of 5 stars
    Reviewed on 1/10/2026

    All very well

    5 out of 5 stars
    Reviewed on 1/8/2026

    Very good experience

    5 out of 5 stars
    Reviewed on 12/31/2025

    Dr was nice and personable

    5 out of 5 stars
    Reviewed on 12/31/2025

    Excellent doctor

    5 out of 5 stars
    Reviewed on 12/30/2025

    Thank you so much Dr. Nissirios!

    5 out of 5 stars
    Reviewed on 12/20/2025

    Dr N is one of the best Doc's I've ever had. Feel he truly cares about my well being and invested in my health.

    5 out of 5 stars
    Reviewed on 12/11/2025

    Very thorough with exam and explaining all medical related information also one of the best dress doctors I've seen in 20 years. Very professional clean office no wait time great experience.

    5 out of 5 stars
    Reviewed on 12/9/2025

    Very good

    5 out of 5 stars
    Reviewed on 12/9/2025

    I was very impressed. Took the time and care need to explain my options.

    5 out of 5 stars
    Reviewed on 12/2/2025

    Excellent rapport, doctor was very caring.

    5 out of 5 stars
    Reviewed on 11/25/2025

    The doctor knew my case before hand, listened to my complain, gave me instructions, prescribed or continue my medication and I left happy and satisfied with my care and improvement.

    5 out of 5 stars
    Reviewed on 11/25/2025

    Fantastic

    5 out of 5 stars
    Reviewed on 11/18/2025

    I'm very satisfied with the doctor and his staff

    5 out of 5 stars
    Reviewed on 11/10/2025

    All excellent

    5 out of 5 stars
    Reviewed on 11/10/2025

    Excellent experience

    5 out of 5 stars
    Reviewed on 11/8/2025

    Very good

    5 out of 5 stars
    Reviewed on 11/7/2025

    Dr. Nissirios is wonderful

    5 out of 5 stars
    Reviewed on 11/7/2025

    Dr. Nissirios is wonderful.

    5 out of 5 stars
    Reviewed on 10/29/2025

    Comfortable with doctor & staff

    5 out of 5 stars
    Reviewed on 10/25/2025

    I make a 100 mile round trip for Dr. Nissirios.

    5 out of 5 stars
    Reviewed on 10/23/2025

    The scheduled appointment is usually on time. [...] Dr. Nissirios is always attentive to my needs. Keep up the good work.

    5 out of 5 stars
    Reviewed on 10/15/2025

    Dr N is very professional and listens to me in easy to understand manner.

    5 out of 5 stars
    Reviewed on 10/8/2025

    Dr. Nissirios is very patient, knowledgeable, and thorough. I am in good hands for the care.

    5 out of 5 stars
    Reviewed on 10/7/2025

    Excellent cardiologist. Kind, professional, and explained everything clearly.

    5 out of 5 stars
    Reviewed on 10/7/2025

    Great doctor

    5 out of 5 stars
    Reviewed on 10/5/2025

    Would absolutely recommend Dr Kim to everyone. She's extremely knowledgeable and professional, certainly pleasant to speak and I trust her as a doctor

    5 out of 5 stars
    Reviewed on 10/2/2025

    I am very satisfied.

    5 out of 5 stars
    Reviewed on 10/2/2025

    Excellent job. Listened to me and gave me options

    5 out of 5 stars
    Reviewed on 10/1/2025

    Very good experience

    5 out of 5 stars
    Reviewed on 9/27/2025

    Valley has a gem of a cardiologist in their practice!

    5 out of 5 stars
    Reviewed on 8/28/2025

    Very professional, thorough and compassionate

    5 out of 5 stars
    Reviewed on 8/16/2025

    Good

    5 out of 5 stars
    Reviewed on 8/12/2025

    The Dr is excellent a lot of experience in his branch thank you

    5 out of 5 stars
    Reviewed on 7/20/2025

    No complaints

    5 out of 5 stars
    Reviewed on 7/10/2025

    Dr Nissirios is a great doctor and successfully reduced my bp to excellent levels, which my prior Dr never accomplished. Great job Dr Nissirios

    5 out of 5 stars
    Reviewed on 6/29/2025

    I thought he was excellent!

    5 out of 5 stars
    Reviewed on 6/24/2025

    Doctor is focused and vested in my care. I was encouraged to reach out with any concerns .

    5 out of 5 stars
    Reviewed on 6/22/2025

    I have total confidence

    5 out of 5 stars
    Reviewed on 6/21/2025

    Doctor listened and spoke in away I understood

    5 out of 5 stars
    Reviewed on 6/20/2025

    My husband and I followed your doctor from where we live [...]! Driving over an hour, you can tell what kind of doctor you have on your staff! Dr. Nissiirios Is an out standing in our opinion!

    5 out of 5 stars
    Reviewed on 6/13/2025

    Very pleasant experience

    5 out of 5 stars
    Reviewed on 6/6/2025

    All good.

    5 out of 5 stars
    Reviewed on 6/4/2025

    Dr. Nissirios is patient, kind and caring.

    5 out of 5 stars
    Reviewed on 5/30/2025

    He is an excellent Dr. Smart, listens and is kind.

    5 out of 5 stars
    Reviewed on 5/30/2025

    Treated excellent

    5 out of 5 stars
    Reviewed on 5/29/2025

    I received a very good explanation of the analyses of various test results as they pertained to me