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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

76 reviews

    • Reviewed on Jul 31, 2026
    • Verified Review

    He is a very good at what he does in his field

    • Reviewed on Jul 27, 2026
    • Verified Review

    Dr feinern is a lovely and wonderful kind and understanding dr. He listen to you and talks very easygoing to me so I was able to understand everything he had to say

    • Reviewed on Jul 16, 2026
    • Verified Review

    It was hard for me to understand him with the mask on.

    • Reviewed on Jul 7, 2026
    • Verified Review

    Doctor gave me a 5 minute lesson on the condition I've had for 26 years. But did not get to know me. I am just a lab report. I am going back again in 2 months. My old doctor I saw once a year. I guess Optum needs multipule visits to make money,

    • Reviewed on Jul 6, 2026
    • Verified Review

    Very thorough and thoughtful.

    • Reviewed on Jul 2, 2026
    • Verified Review

    explained everythiing to me

    • Reviewed on Jun 26, 2026
    • Verified Review

    Dr Feiner answered all my questions and explained everything thoroughly. Friendly and personable

    • Reviewed on Jun 21, 2026
    • Verified Review

    Professional, sincere, and answers all my questions

    • Reviewed on Jun 15, 2026
    • Verified Review

    Dr. Feiner really seems to listen. He gives you his undivided attention.

    • Reviewed on May 31, 2026
    • Verified Review

    Explained everything thoroughly.

    • Reviewed on May 29, 2026
    • Verified Review

    He explained everything to me and answered my questions

    • Reviewed on May 22, 2026
    • Verified Review

    Dr.Feiner is a great Doctor, he cares for you. Dr. Feiner ask me about my health. I provide him the best Doctor.

    • Reviewed on May 18, 2026
    • Verified Review

    Very satisfied with my care

    • Reviewed on May 16, 2026
    • Verified Review

    He is kind and considerate

    • Reviewed on May 14, 2026
    • Verified Review

    He was thorough and pleasant as always😊

    • Reviewed on May 14, 2026
    • Verified Review

    Very helpful and friendly

    • Reviewed on May 3, 2026
    • Verified Review

    Very knowledgeable and understanding

    • Reviewed on 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.

    • Reviewed on Apr 29, 2026
    • Verified Review

    He explains everything so Thats you understand.

    • Reviewed on Apr 28, 2026
    • Verified Review

    Caring answered all Concerns

Page 1 of 4
  • 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
  • Education

    Medical School

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

    Residency

    • State University Of New York Upstate