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Seth Lessner, MD

Seth Lessner, MD

Specialty

Clinical Cardiac Electrophysiology

Languages

English

Seeing patients at

Monday 7:30 AM - 6:00 PM
Tuesday 7:30 AM - 6:00 PM
Wednesday 7:30 AM - 6:00 PM
Thursday 7:30 AM - 6:00 PM
Friday 7:30 AM - 6:00 PM
Saturday 8:00 AM - 3:00 PM
Sunday Closed
Hours may vary, please contact to schedule and confirm appointment availability.
Monday 7:00 AM - 7:15 PM
Tuesday 7:00 AM - 7:15 PM
Wednesday 7:00 AM - 7:15 PM
Thursday 7:00 AM - 7:15 PM
Friday 7:00 AM - 7:00 PM
Saturday 7:30 AM - 2:00 PM
Sunday Closed
Hours may vary, please contact to schedule and confirm appointment availability.

Patient Reviews

Patient review summary

Learn about our survey

5

4

3

2

1

4.9

54 reviews

    • Reviewed on May 30, 2026
    • Verified Review

    Pleasant and thorough. Very concerned. Excellent care.

    • Reviewed on May 29, 2026
    • Verified Review

    I felt rushed and not heard . I have be patient of Crystal run healthcare for at least two decades and this was not a pleasant appointment.

    • Reviewed on May 29, 2026
    • Verified Review

    Very professional and cares about my health

    • Reviewed on May 29, 2026
    • Verified Review

    Dr.Lessner is professional, courteous and knowledgeable. His communication skills make me feel comfortable during my appointment.

    • Reviewed on May 22, 2026
    • Verified Review

    Not sure if I would recommend him

    • Reviewed on May 18, 2026
    • Verified Review

    Answered most of my questions.

    • Reviewed on May 14, 2026
    • Verified Review

    My first interaction with Dr. Lessner was in the Emergency Department. He was in scrubs so I assumed that he was either coming from or going to a surgery. He indicated that there was little time to thoroughly describe in detail how I might be a good candidate for the SVT ablation. He encouraged me to schedule an office visit where he would have more time, charts and such to thoroughly inform me about the procedure. I scheduled an appointment and met with him a couple weeks later. At that time he described the procedure in detail. I had also done my own research on it prior to the appointment. When I asked what was it that I needed to do about my heart he said that “ this (SVT ablation), was the definitive thing to do”. However, I did recall that the cardiologist in the Emergency Department had also mentioned doing a cardiovascular angiogram as another possible way to assess why I was having SVT. After the office visit I also gathered more information and insights from people I knew who had issues with arrhythmia.

    • Reviewed on May 9, 2026
    • Verified Review

    Listened, explained, provided personalized care

    • Reviewed on Apr 30, 2026
    • Verified Review

    He is the best. He is personal, he make you feel you're his only patient. He know you. And that is very important. Excellent. He explain everything to you

    • Reviewed on Apr 29, 2026
    • Verified Review

    He is simply the best!

    • Reviewed on Apr 24, 2026
    • Verified Review

    He was caring, listened to my concerns, and had me scheduled for a procedure within the visit.

    • Reviewed on Apr 22, 2026
    • Verified Review

    9

    • Reviewed on Apr 18, 2026
    • Verified Review

    He has been a Rockstar. He listens, explains things clearly, you can tell he really cares about his patients.

    • Reviewed on Apr 6, 2026
    • Verified Review

    He is a very good dr

    • Reviewed on Mar 27, 2026
    • Verified Review

    Dr. Lessner is a very skilled cardiologist and a very compassionate doctor. He also gives you the straight truth and doesn’t hold back.

    • Reviewed on Mar 19, 2026
    • Verified Review

    The level of care and compassion each time I saw him.

    • Reviewed on Mar 18, 2026
    • Verified Review

    Excellent dr

    • Reviewed on Mar 17, 2026
    • Verified Review

    I never give highest rating for anything.

    • Reviewed on Mar 13, 2026
    • Verified Review

    Dr. Lessner is a good doctor, friendly, answers your questions.

    • Reviewed on Feb 26, 2026
    • Verified Review

    nice person good bedside manners

Page 1 of 3
  • About Seth Lessner, MD

    Dr. Seth Lessner is an internist caring for adult patients. He provides preventive care and treatment for common medical conditions.

    Philosophy of care

    Dr. Lessner values continuity of care and shared decision making.

    Gender

    Male

    Licenses

    NY, 256917

    Network Name

    Crystal Run Healthcare

    NPI

    1972761591

  • Insurance Accepted

    This list is for informational purposes only and may not reflect the most current plans accepted by the provider. Optum accepts most major health insurance plans. Please contact your insurance company to confirm your coverage, eligibility, and the provider's participation in your plan.

    • AARP
    • Aetna
    • Anthem/BCBS
    • CDPHP
    • Cigna
    • Emblem
    • FDNY/WTC911
    • HealthFirst
    • Humana
    • MVP
    • Magnacare
    • MedicaidNY/Medicare
    • Molina
    • Multiplan
    • NYSHIP
    • Northwell
    • Oscar
    • Oxford
    • Tricare
    • UHC
    • Univera
    • VA/CHAMPVA
  • Awards and Publications