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Andrew T. Marshall, MD

Andrew T. Marshall, MD

Optum Provider

Specialty

Gastroenterology

Languages

English

Seeing patients at

Monday 7:00 AM - 5:00 PM
Tuesday 7:00 AM - 5:00 PM
Wednesday 7:00 AM - 4:00 PM
Thursday 7:00 AM - 5:00 PM
Friday 7:00 AM - 4:00 PM
Saturday 7:00 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

4.8

46 reviews

    • Reviewed on May 26, 2026
    • Verified Review

    Excellent diagnostician and caring.

    • Reviewed on May 6, 2026
    • Verified Review

    Been going to Andrew Marshall for about 20 yrs.He has always treated me with great respect I am very comfortable with him. He takes his time to listen to my concerns and has great bedside manner. Highly recommend Dr.Marshall

    • Reviewed on May 1, 2026
    • Verified Review

    He Is through and Is most caring.

    • Reviewed on Apr 27, 2026
    • Verified Review

    Very thorough.

    • Reviewed on Apr 15, 2026
    • Verified Review

    This Doctor is amazing! Professional! Attentive to your need.

    • Reviewed on Apr 9, 2026
    • Verified Review

    Dr Marshall shows concern, listens to my concerns and gives honest feedback.

    • Reviewed on Mar 26, 2026
    • Verified Review

    He is 100% committed to treating me with compassion and professionalism. He is a no nonsense doctor that performs the gastrointestinal procedures seamlessly. I trust him explicitly

    • Reviewed on Mar 26, 2026
    • Verified Review

    Compassionate thorough doctor

    • Reviewed on Mar 25, 2026
    • Verified Review

    Personal and appointments are followed Basically very little waiting time in reception area

    • Reviewed on Mar 22, 2026
    • Verified Review

    Extremely competent.

    • Reviewed on Mar 18, 2026
    • Verified Review

    Dr. Marshall is always wonderful!

    • Reviewed on Mar 18, 2026
    • Verified Review

    Compassionate, knowledgeable and explains things thoroughly.

    • Reviewed on Feb 26, 2026
    • Verified Review

    Calming, doesn’t rush the patient out, answered all questions or concerns

    • Reviewed on Feb 20, 2026
    • Verified Review

    Dr Marshall is very thorough and responsive, a good diagnostician.

    • Reviewed on Feb 14, 2026
    • Verified Review

    He’s efficient, courteous , caring and extremely thorough

    • Reviewed on Feb 10, 2026
    • Verified Review

    Always very professional and pleasant to deal with

    • Reviewed on Feb 5, 2026
    • Verified Review

    Takes time and interest to listen to all my concerns with my well being

    • Reviewed on Feb 2, 2026
    • Verified Review

    He is very thorough

    • Reviewed on Jan 17, 2026
    • Verified Review

    Very friendly and knowledable

    • Reviewed on Jan 14, 2026
    • Verified Review

    A trully knowledgable,empathetic but firm medical provider.

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  • About Andrew T. Marshall, MD

    Dr. Andrew T. Marshall is board certified in internal medicine and gastroenterology. He completed medical training at Emory University, Mount Sinai School of Medicine, and Harvard affiliated hospitals.

    Philosophy of care

    Dr. Marshall partners with patients to deliver thoughtful, comprehensive digestive and primary care.

    Gender

    Male

    Board certifications

    American Board of Internal Medicine

    Licenses

    NY, 193405

    Employed or contracted

    Employed

    Network Name

    ProHealth

    NPI

    1801846290

  • 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.

    • 1199
    • Aetna
    • Affinity
    • Anthem BCBS
    • CHN
    • Centivo
    • Cigna
    • Coventry
    • EmblemHealth
    • First Health
    • Humana
    • MagnaCare
    • Medicaid
    • Medicare
    • MultiPlan
    • NYSHIP
    • Northwell Direct
    • Oscar
    • Oxford
    • TRICARE
    • UHC
    • UMR
  • Medical School

    • Mount Sinai School Of Medicine Of New York University