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Leonard Naymagon, MD

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    • Position
    • ASSISTANT PROFESSOR | Medicine, Hematology and Medical Oncology
    • Specialties
    • Hematology-Oncology
    • Cancer (Oncology)
    • Language
    • English
    • Hospital Affiliations
    • The Mount Sinai Hospital
    • Mount Sinai Morningside and Mount Sinai West
    • Mount Sinai Beth Israel
    • Mount Sinai Queens
    • Mount Sinai Brooklyn
    • New York Eye and Ear Infirmary of Mount Sinai
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Leonard Naymagon, MD, is Assistant Professor of Medicine (Hematology and Medical Oncology) at the Icahn School of Medicine at Mount Sinai. He sees patients at The Ruttenberg Treatment Center at The Mount Sinai Hospital campus and at Mount Sinai-Union Square, with a clinical focus on benign hematology. He conducts clinical research on venous thrombosis; adult hemophagocytic lymphohistiocytosis (HLH); and thrombotic and hemorrhagic complications of blood cancers, particularly myeloid malignancies. Dr. Naymagon completed his fellowship in Hematology and Medical Oncology at Mount Sinai and residency in Internal Medicine at New York University School of Medicine. He earned his medical degree from Albert Einstein College of Medicine.

Clinical Focus

  • Anticoagulant Therapy
  • Cytopenias (anemias, thrombocytopenias, etc)
  • Lymphoproliferative disorders
  • Myeloproliferative Disorders
  • Thrombophilia
  • Thrombosis
  • Vein Thrombosis / Inflammation


MD, Albert Einstein College of Medicine

Residency, Internal Medicine
New York University School of Medicine

Fellowship, Hematology/Oncology
Mount Sinai Hospital