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    Dr. Ohnuma's Overview

    Dr. Ohnuma graduated from the Tohoku Univ, Fac of Med, Sendai, Japan in 1957. He works in New York, NY and specializes in Hematology/Oncology. Dr. Ohnuma is affiliated with Mount Sinai Medical Center.

    Dr. Ohnuma's Experience

    Years in Practice: 60

    Conditions Treated by Dr. Ohnuma

    Procedures Performed by Dr. Ohnuma

    Dr. Ohnuma's Specialties


    Dr. Ohnuma's Education & Training

    Medical School: Tohoku Univ, Fac of Med, Sendai, Japan; Graduated 1957

    Dr. Ohnuma's Rating

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    Overall Rating


    • Explains conditions & treatments
    • Takes time to answer my questions
    • Provides follow-up as needed
    • View All Ratings

    Dr. Ohnuma's Accepted Insurance

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

    • Aetna Choice POS II
    • Aetna Choice POS Open Access
    • Aetna Elect Choice EPO
    • Aetna HMO
    • Aetna Managed Choice POS Open Access
    • Aetna NYC Community Plan
    • Aetna Signature Administrators PPO
    • Affinity Essential Qualified Health Plans
    • BCBS Blue Card PPO
    • BCBS MA Blue Care Elect PPO
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    Dr. Ohnuma's Office Information & Appointments

    Office Locations

    Ruttenberg Treatment Center

    1470 Madison Ave FL 4
    New York, NY 10029
    (212) 241-6756


    Office Hours and Information

    Fax: (646) 537-9572

    Practice Website: Not Available

    Accepting New Patients: Yes

    Medicare Accepted: Yes

    Medicaid Accepted: Yes

    Monday 7:30 AM - 5:00 PM
    Tuesday 7:30 AM - 5:00 PM
    Wednesday 7:30 AM - 5:00 PM
    Thursday 7:30 AM - 5:00 PM
    Friday 7:30 AM - 5:00 PM
    Saturday Closed
    Sunday Closed

    Other Physicians in Dr. Ohnuma's Practice

    Dr. Ohnuma's Hospital Affiliations

    Office Locations