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Joshua James Feiner, MD

Joshua James Feiner, MD

Optum Provider

Specialty

Endocrinology Diabetes & Metabolism

Languages

English

Seeing patients at

Patient Reviews

Patient review summary

Learn about our survey

5

4

3

2

1

4.7

59 reviews

  • Apr 29, 2026
    Verified Review

    He cared very much about what was going on with my health and really took the time to listen. Very thorough with responding when I messaged him on the portal with an actual phone call to explain everything I questioned. Overall, he’s a wonderful doctor and I’m very happy that I was referred to him.

  • Apr 29, 2026
    Verified Review

    He explains everything so Thats you understand.

  • Apr 28, 2026
    Verified Review

    Caring answered all Concerns

  • Apr 28, 2026
    Verified Review

    Great Doc!

  • Apr 26, 2026
    Verified Review

    robotic

  • Apr 18, 2026
    Verified Review

    Excellent endocrinologist who cares about his patients.

  • Apr 18, 2026
    Verified Review

    Very efficient explains so I understand.

  • Apr 17, 2026
    Verified Review

    He is attentive and effective

  • Apr 10, 2026
    Verified Review

    He is very good, explains and takes his time with you. If you message him on my chart he gets back to quickly. I am very happy that I switched to Him. My husband and 2 sisters use him as well. And they’re pleased with the care.

  • Apr 9, 2026
    Verified Review

    Explains medication and follow up regarding lab results.

  • Apr 6, 2026
    Verified Review

    great service

  • Apr 5, 2026
    Verified Review

    He is very thorough and professional

  • Apr 2, 2026
    Verified Review

    Gives very specific instructions, very aware of changes in my appearance, wearing a mask to keep himself healthy seems like a good idea to keep staff and patients healthy also.

  • Mar 31, 2026
    Verified Review

    He is good for my issues not sure how he is with other endocrine issues

  • Mar 31, 2026
    Verified Review

    He is very professional and knowledgable and helpful

  • Mar 28, 2026
    Verified Review

    Nice staff , helpful

  • Mar 28, 2026
    Verified Review

    Excellent doctor! Listens to you and is very knowledgeable.

  • Mar 26, 2026
    Verified Review

    Very thorough and explains all medical needs

  • Mar 16, 2026
    Verified Review

    He explains everything he's going to do before doing it. And after my exam & ultrasound he explains what he saw.

  • Mar 15, 2026
    Verified Review

    Professional in dealing with patient

Page 1 of 3
  • About Joshua James Feiner, MD

    Dr. Joshua James Feiner is a board certified endocrinologist. He has published research related to diabetes and previously practiced on Eastern Long Island.

    Philosophy of care

    Dr. Feiner partners with patients to support informed, evidence-based endocrine care.

    Gender

    Male

    Board certifications

    American Board of Internal Medicine

    Licenses

    NY, 231437

    Employed or contracted

    Employed

    Network Name

    ProHealth

    NPI

    1750560421

  • 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

    • State University of New York (SUNY) - Stony Brook

    Residency

    • State University Of New York Upstate