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    Dr. Diane M. Horowitz, MD

    Internal Medicine, Rheumatology

    • (516) 708-2550

    Dr. Horowitz's Overview

    Dr. Horowitz graduated from the Stony Brook University School of Medicine in 2004. She works in Great Neck, NY and specializes in Internal Medicine and Rheumatology. Dr. Horowitz is affiliated with Northwell Health Long Island Jewish Medical Center.

    Dr. Horowitz's Experience

    Years in Practice: 12

    Procedures Performed by Dr. Horowitz

    Dr. Horowitz's Specialties

    Internal Medicine, Rheumatology

    Dr. Horowitz's Education & Training

    Medical School: Stony Brook University School of Medicine; Graduated 2004

    Dr. Horowitz's Rating

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    Overall Rating


    • Explains conditions & treatments
    • Takes time to answer my questions
    • Provides follow-up as needed
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    Dr. Horowitz's Accepted Insurance

    Please verify insurance information directly with your doctor's office as it may change frequently.

    • Aetna Choice POS II
    • Aetna Elect Choice EPO
    • Aetna HMO
    • Aetna Managed Choice POS Open Access
    • Aetna Signature Administrators PPO
    • BCBS Blue Card PPO
    • CIGNA Open Access Plus
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    Dr. Horowitz's Office Information & Appointments

    Office Locations

    Northwell Health Physician Partners
    Northwell Health Rheumatology

    865 Northern Blvd Ste 302
    Great Neck, NY 11021
    (516) 708-2550


    Office Hours and Information

    Fax: (516) 708-2597

    Practice Website:

    Accepting New Patients: Yes

    Medicare Accepted: Yes

    Medicaid Accepted: Yes

    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 9:00 AM - 12:00 PM
    Sunday 8:00 AM - 5:00 PM

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