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Jeffrey L. Halaas, MD, PHD

Jeffrey L. Halaas, MD, PHD

Optum Provider

Specialty

Hematology & Oncology

Languages

English

Seeing patients at

Monday 9:00 AM - 5:00 PM
Tuesday 9:00 AM - 5:00 PM
Wednesday 9:00 AM - 5:00 PM
Thursday 9:00 AM - 5:00 PM
Friday 9:00 AM - 5:00 PM
Saturday Closed
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

51 reviews

    • Reviewed on Jun 20, 2026
    • Verified Review

    He's the best! Knows his stuff, is kind, thorough and caring.

    • Reviewed on Jun 18, 2026
    • Verified Review

    He is extremely caring and he keeps you well informed about your issues

    • Reviewed on Jun 15, 2026
    • Verified Review

    As his patient I feel a bit uncomfortable when discussing my condition (MDS). That my questions are rudimentary and redundant.

    • Reviewed on Jun 15, 2026
    • Verified Review

    Professional all the way, expert in his field!

    • Reviewed on Jun 11, 2026
    • Verified Review

    Excellent doctor

    • Reviewed on Jun 10, 2026
    • Verified Review

    Knowledgeable and explains treatment

    • Reviewed on Jun 7, 2026
    • Verified Review

    Dr Hallas is a professional, caring, and top-notch physician.

    • Reviewed on Jun 7, 2026
    • Verified Review

    Attentive, familiar with my background health issue and suggested a plan going forward

    • Reviewed on Jun 5, 2026
    • Verified Review

    I find his manner friendly. He informs well if you ask specific questions

    • Reviewed on May 21, 2026
    • Verified Review

    knowledgeable, thoughtful to your concerns

    • Reviewed on May 19, 2026
    • Verified Review

    Explained everything. Competent.

    • Reviewed on May 15, 2026
    • Verified Review

    Very informative about my test and what l should do about continuing taking my medication.

    • Reviewed on May 6, 2026
    • Verified Review

    Very knowledgeable and thorough. Also very courteous and kind.

    • Reviewed on Apr 26, 2026
    • Verified Review

    Excellent care provided caring compassion and understanding arranged everything we needed

    • Reviewed on Apr 14, 2026
    • Verified Review

    Always on top of my medical condition and latest advancements in oncology.

    • Reviewed on Apr 11, 2026
    • Verified Review

    Great doctor, very knowledgeable.

    • Reviewed on Apr 5, 2026
    • Verified Review

    Dr. Halaas is thorough, informative and caring toward my Mom. He takes his time with her, is always aware of changes in her labs and has a plan of action. We left the appointment feeling reassured and that we were in excellent hands. She's been a patient for years. We highly recommend him.

    • Reviewed on Apr 4, 2026
    • Verified Review

    He was informed about my history and very easy to communicate with.

    • Reviewed on Mar 23, 2026
    • Verified Review

    I like Dr halaas he always answers my questions and he is concerned about his patients. I would highly recommend Dr DrHalaas.

    • Reviewed on Mar 22, 2026
    • Verified Review

    Excellent doctor!

Page 1 of 3
  • About Jeffrey L. Halaas, MD, PHD

    Dr. Jeffrey L. Halaas is a physician specializing in oncology and benign hematology. His clinical focus includes lymphoma leukemia and solid tumor cancers.

    Philosophy of care

    Dr. Halaas provides clear communication and compassionate support throughout treatment.

    Gender

    Male

    Board certifications

    American Board certified in Medical Oncology and Hematology

    Licenses

    NY, 219677

    Employed or contracted

    Employed

    Network Name

    CareMount

    NPI

    1851346928

  • 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
    • CDPHP
    • CHN
    • Centivo
    • Cigna
    • Coventry
    • EmblemHealth
    • First Health
    • Healthfirst
    • Humana
    • MVP Healthcare
    • MagnaCare
    • Medicaid
    • Medicare
    • MetroPlus
    • MultiPlan
    • NYSHIP
    • Northwell Direct
    • Oscar
    • Oxford
    • TRICARE
    • UMR
  • Medical School

    • Weill Cornell Medical College

    Residency

    • NewYork-Presbyterian Hospital/Weill Cornell Medical Center

    Fellowship

    • Memorial Sloan Kettering Cancer Center Hematology & Medical Oncology

      Hematology & Oncology

      New York

  • Awards and Publications

    Westchester Magazine, Best Doctors

    US News and World Report, Best Doctors