Jeffrey L. Halaas
Experienced in Hairy Cell Leukemia (HCL)

Dr. Jeffrey L. Halaas

Oncology | Hematology
Northwell Health
90 South Bedford Road, 
Mount Kisco, NY 
On Staff At
Offers Telehealth
Experienced in Hairy Cell Leukemia (HCL)
Northwell Health
90 South Bedford Road, 
Mount Kisco, NY 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

Jeffrey Halaas is a Hematologist and an Oncologist in Mount Kisco, New York. Dr. Halaas is rated as an Experienced provider by MediFind in the treatment of Hairy Cell Leukemia (HCL). His top areas of expertise are Familial Colorectal Cancer, Pleuropulmonary Blastoma, Thrombocytopenia, and Schnitzler Syndrome.

His clinical research consists of participating in 1 clinical trial. MediFind looks at clinical research from the past 15 years.

Graduate Institution
Weill Cornell Medicine Cornell University
Residency
Presbyterian Hospital City of New York
Specialties
Oncology
Hematology
Licenses
Internal Medicine in NY
Board Certifications
American Board Of Internal Medicine/Hematology
American Board Of Internal Medicine/Medical Oncology
Fellowships
Memorial Sloan-Kettering Cancer Center
Hospital Affiliations
Northern Westchester Hospital
Hofstra/Northwell School Of Medicine/Nursing
Languages Spoken
English
Gender
Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

Find your insurance
Find your insuranceClose

Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Capital District Physicians Health
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
Cigna
  • EPO
  • HMO
  • PPO
EmblemHealth
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE PART D
Health First
  • HMO
  • POS
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Independent Health
  • EPO
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
MetLife
  • PPO
MVP Health
  • EPO
  • PPO
Northwell Health
  • INSURANCE PLAN
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 11 Less Insurance Carriers -

Locations

90 South Bedford Road, Mount Kisco, NY 10549
Call: 914-241-1050
Other Locations
185 Route 312, Brewster, NY 10509
Call: 845-278-7000

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

1 Clinical Trials

An Observational Study Assessing the Clinical Effectiveness of VeriStrat and Validating Immunotherapy Tests in Subjects With Non-Small Cell Lung Cancer
An Observational Study Assessing the Clinical Effectiveness of VeriStrat and Validating Immunotherapy Tests in Subjects With Non-Small Cell Lung Cancer
Enrollment Status: Active_not_recruiting
Publish Date: September 19, 2025
Similar Doctors
Elite in Hairy Cell Leukemia (HCL)
Dr. Omar I. Abdel-Wahab
Oncology
Elite in Hairy Cell Leukemia (HCL)
Dr. Omar I. Abdel-Wahab
Oncology

Memorial Hematology Lymphoma Group

1275 York Ave, 
New York, NY 
 (32.3 miles away)
212-639-2000
Languages Spoken:
English

Omar Abdel-Wahab is an Oncologist in New York, New York. Dr. Abdel-Wahab is rated as an Elite provider by MediFind in the treatment of Hairy Cell Leukemia (HCL). His top areas of expertise are Reticulohistiocytoma, Hairy Cell Leukemia (HCL), Leukemia, Rosai-Dorfman Disease, and Bone Marrow Aspiration.

Elite in Hairy Cell Leukemia (HCL)
Dr. Jae H. Park
Hematology Oncology | Hematology | Oncology
Elite in Hairy Cell Leukemia (HCL)
Dr. Jae H. Park
Hematology Oncology | Hematology | Oncology

Memorial Hematology Lymphoma Group

1275 York Ave, 
New York, NY 
 (32.3 miles away)
212-639-2000
Languages Spoken:
English
See accepted insurances
Offers Telehealth

Jae Park is a Hematologist Oncology specialist and a Hematologist in New York, New York. Dr. Park is rated as an Elite provider by MediFind in the treatment of Hairy Cell Leukemia (HCL). His top areas of expertise are Hairy Cell Leukemia (HCL), Acute Lymphoblastic Leukemia (ALL), Leukemia, Bone Marrow Aspiration, and Bone Marrow Transplant.

Douglas E. Gladstone
Elite in Hairy Cell Leukemia (HCL)
Dr. Douglas E. Gladstone
Oncology | Transplant Surgery
Elite in Hairy Cell Leukemia (HCL)
Dr. Douglas E. Gladstone
Oncology | Transplant Surgery

Northwell Health Center For Advanced Medicine, RJ Zuckerberg Cancer Center

450 Lakeville Road, Entrance B, 
Lake Success, NY 
 (30.4 miles away)
516-734-8900
Languages Spoken:
English
See accepted insurances
Offers Telehealth

Douglas Gladstone is a Transplant Surgeon in Lake Success, New York. Dr. Gladstone is rated as a Distinguished provider by MediFind in the treatment of Hairy Cell Leukemia (HCL). His top areas of expertise are Hairy Cell Leukemia (HCL), Chronic Lymphocytic Leukemia (CLL), Chronic B-Cell Leukemia (CBCL), Bone Marrow Transplant, and Bone Marrow Aspiration.

VIEW MORE HAIRY CELL LEUKEMIA (HCL) DOCTORS

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

Find Dr. Halaas's expertise for a condition
ConditionClose
    • Distinguished
    • Familial Colorectal Cancer
      Dr. Halaas is
      Distinguished
      . Learn about Familial Colorectal Cancer.
      See more Familial Colorectal Cancer experts
    • Pleuropulmonary Blastoma
      Dr. Halaas is
      Distinguished
      . Learn about Pleuropulmonary Blastoma.
      See more Pleuropulmonary Blastoma experts
    • Thrombocytopenia
      Dr. Halaas is
      Distinguished
      . Learn about Thrombocytopenia.
      See more Thrombocytopenia experts
    • Advanced
    • Adult Immune Thrombocytopenia
      Dr. Halaas is
      Advanced
      . Learn about Adult Immune Thrombocytopenia.
      See more Adult Immune Thrombocytopenia experts
    • Agranulocytosis
      Dr. Halaas is
      Advanced
      . Learn about Agranulocytosis.
      See more Agranulocytosis experts
    • ALK-Positive Non-Small Cell Lung Cancer
      Dr. Halaas is
      Advanced
      . Learn about ALK-Positive Non-Small Cell Lung Cancer.
      See more ALK-Positive Non-Small Cell Lung Cancer experts
    • Anemia
      Dr. Halaas is
      Advanced
      . Learn about Anemia.
      See more Anemia experts
    • Angiosarcoma
      Dr. Halaas is
      Advanced
      . Learn about Angiosarcoma.
      See more Angiosarcoma experts
    • B-Cell Lymphoma
      Dr. Halaas is
      Advanced
      . Learn about B-Cell Lymphoma.
      See more B-Cell Lymphoma experts
    View All 46 Advanced Conditions
    • Experienced
    • Acute Myeloblastic Leukemia with Maturation
      Dr. Halaas is
      Experienced
      . Learn about Acute Myeloblastic Leukemia with Maturation.
      See more Acute Myeloblastic Leukemia with Maturation experts
    • Acute Myeloblastic Leukemia without Maturation
      Dr. Halaas is
      Experienced
      . Learn about Acute Myeloblastic Leukemia without Maturation.
      See more Acute Myeloblastic Leukemia without Maturation experts
    • Acute Myeloid Leukemia (AML)
      Dr. Halaas is
      Experienced
      . Learn about Acute Myeloid Leukemia (AML).
      See more Acute Myeloid Leukemia (AML) experts
    • Adult Soft Tissue Sarcoma
      Dr. Halaas is
      Experienced
      . Learn about Adult Soft Tissue Sarcoma.
      See more Adult Soft Tissue Sarcoma experts
    • Alveolar Soft Part Sarcoma
      Dr. Halaas is
      Experienced
      . Learn about Alveolar Soft Part Sarcoma.
      See more Alveolar Soft Part Sarcoma experts
    • Anal Cancer
      Dr. Halaas is
      Experienced
      . Learn about Anal Cancer.
      See more Anal Cancer experts
    View All 105 Experienced Conditions
    Want to save this doctor for later?
    Sign Up
    Is this your doctor?
    Find A Second Opinion
    Not sure about your diagnosis?
    Check Your Symptoms
     
     
     
     
    Learn about our expert tiers
    Learn More
    Are you the provider on this profile?
    Claim Profile
    For Patients
    • Our Story
    • How MediFind Works
    • Conditions A-Z
    • Doctor Directory
    • Symptoms Directory
    • Procedures Directory
    • Treatment Directory
    • Drug Directory
    • Infusion Center Finder
    • FAQ
    • Contact Us
    For Providers and Practices
    • Claim Your Profile
    • Newsroom
    Business Solutions
    • Provider
    • Network Solutions
    Additional Resources
    • Consumer Health Data Privacy Policy
    • Privacy Policy
    • Terms of Use
    • Advertising Policy
    • Content Policy
    Subscribe to our newsletter

    Sign up to stay informed about MediFind and get wellness sent your way.

    Close

      By subscribing, I agree to MediFind's Terms of Use, Privacy Policy and Consumer Health Data Privacy Policy, as applicable.

      Bullet PinMediFind
      Follow us on
      This information is not intended as a substitute for informed medical advice. You should work with a licensed professional to diagnose and treat health conditions. We let the data speak for itself, MediFind does not endorse any healthcare providers.
      © 2026 All Rights Reserved

      Request an Appointment

      If you are experiencing a medical emergency, call 9-1-1.

      MediFind will contact the provider for your appointment request. You’ll receive status updates by email. Your provider or MediFind will reach out to you directly by phone or email to schedule your appointment or request additional information.

      Patient Details

      This information is for the patient who will be seen at the appointment.

        Close

        Returning patient? Use your address on file with the provider.

        Insurance Details

        Please provide information of the primary insurance holder as the practice may require this information to schedule.

        Insurance Provider *
        Insurance ProviderClose

        Appointments Details

        Let’s get more information about your appointment.

                0 / 1000
                0 / 1000
                By pressing the Submit button you are agreeing to MediFind’s Terms of Use, Privacy Policy and Consumer Health Data Privacy Policy, as applicable.