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Alex J. Gershenhorn, MD

Alex J. Gershenhorn, MD

Specialty

Gastroenterology

Languages

English

Seeing patients at

Monday 7:00 AM - 6:15 PM
Tuesday 7:00 AM - 6:15 PM
Wednesday 7:00 AM - 6:15 PM
Thursday 7:00 AM - 6:15 PM
Friday 7:00 AM - 6:00 PM
Saturday 7:15 AM - 2:00 PM
Sunday Closed
Hours may vary, please contact to schedule and confirm appointment availability.
Monday 7:15 AM - 6:15 PM
Tuesday 7:15 AM - 7:15 PM
Wednesday 7:15 AM - 7:15 PM
Thursday 7:15 AM - 6:15 PM
Friday 7:15 AM - 6:15 PM
Saturday 7:15 AM - 1:00 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

5.0

24 reviews

  • Apr 13, 2026
    Verified Review

    PAY ATTENTION WHAT PT IS SAYING,,,CARING

  • Mar 12, 2026
    Verified Review

    Dr. Gershenhorn was knowledgeable explained everything I needed to know clearly and understandably, his recommendations I appreciated.

  • Jan 29, 2026
    Verified Review

    He is a good doctor

  • Jan 21, 2026
    Verified Review

    Quick and to the point

  • Jan 17, 2026
    Verified Review

    He is very thorough and answers all your questions

  • Jan 4, 2026
    Verified Review

    I have been his patient for years and and very happy with him and trust him

  • Jan 2, 2026
    Verified Review

    Personable and friendly, confident, I like the prep he used for colonoscopy over other providers I have heard about. I had my first colonoscopy with Dr. G 10 years ago and it was a good experience so I’m returning to him.

  • Dec 30, 2025
    Verified Review

    Knowledgeable about my condition and being able to recommend alternatives for me.

  • Nov 30, 2025
    Verified Review

    Made me feel very comfortable pleasant. Thorough

  • Nov 26, 2025
    Verified Review

    He is an excellent doctor.

  • Nov 20, 2025
    Verified Review

    Great Doctor found two polyps that could’ve turned into something if I didn’t address the problem

  • Nov 16, 2025
    Verified Review

    great doctor, very easy to talk to, explains everything and gives good advice.

  • Nov 8, 2025
    Verified Review

    Excellent doctor

  • Nov 4, 2025
    Verified Review

    He explained everything in a way that I understood

  • Oct 17, 2025
    Verified Review

    He listens well and does a good job explaining.

  • Oct 15, 2025
    Verified Review

    Very helpful, seems to genuinely care about helping me.

  • Oct 15, 2025
    Verified Review

    He is always professional and listens to you.

  • Oct 10, 2025
    Verified Review

    All I can say he is an excellent doctor in every way

  • Aug 18, 2025
    Verified Review

    The physician is excellent, explains thoroughly for your care, Rember's prior conversation of the last visit, explains what's next step, etc.

  • Aug 13, 2025
    Verified Review

    I feel safe with him. His demeanor is terrific. He explaiins everything I need to know in a way I can understand. He's the best.

Page 1 of 2
  • About Alex J. Gershenhorn, MD

    Dr. Alex J. Gershenhorn is an internist providing adult primary care. He works with patients to manage chronic conditions and support overall wellness.

    Philosophy of care

    Dr. Gershenhorn emphasizes partnership and clear guidance in care.

    Gender

    Male

    Licenses

    NY, 227291

    Network Name

    Crystal Run Healthcare

    NPI

    1437257797

  • 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
  • Medical School

    • Ohio State University

    Residency

    • Beth Israel Medical Center

  • Awards and Publications