Non-Malignant Hematology

Clinical Services: Hematology
Upper East Side
520 East 70th Street, Starr Pavilion, 3rd Floor
New York, NY 10065
P: (646) 962-2065

Practice Info

The Non-Malignant Hematology Program at Weill Cornell Medicine’s Center for Blood Disorders is dedicated to delivering the most advanced treatment in a supportive and collaborative environment. We care for people with all types of blood disorders, including those affecting the red blood cells, white blood cells, platelets and the clotting system. 

We view each of our patients as individuals, and our approach ensures that each treatment therapy is personalized to meet the unique needs of our patients and their families. We provide comprehensive care for all non-malignant blood conditions, including:

  • Red blood cell disorders, including anemia and hemoglobinopathies (sickle cell disease, thalassemia, and other genetic defects affecting the hemoglobin chains within red blood cells)
  • Blood clots (thrombosis), thrombophilias (genetic thrombotic disorders) and pregnancy and reproductive issues related to thrombosis
  • Iron overload syndromes, including hereditary hemochromatosis 
  • Bleeding and platelet disorders, including hemophilia
  • Thrombotic microangiopathies, including thrombotic thrombocytopenic purpura and atypical hemolytic uremic syndrome
  • Myeloproliferative diseases

We also offer access to individualized, state-of-the-art diagnostic testing, the latest drug therapies, and innovative treatment methods – whether you’re newly diagnosed or have previously received care for your blood disorder.

Our Team

As part of the Weill Cornell Medicine Center for Blood Disorders, our world-class hematology experts provide cutting-edge care for people with blood disorders in a compassionate setting. Our team is highly regarded in the field, with expertise in:

  • Anticoagulation management and long-term outcomes of patients treated for blood clots (thrombosis)
  • Improving quality of life for people with congenital blood disorders
  • Biomarkers and other risk factors for hematologic complications of bone marrow stem cell transplantation
  • Clinical trials of novel therapies across the spectrum of non-malignant blood disorders


We pride ourselves on providing patients with exceptional outcomes. We accomplish this by utilizing a multidisciplinary approach that brings together our world-renowned hematologists, transfusion specialists, pathologists, nurses and other healthcare professionals. Together with leading experts in primary care, infectious diseases, pulmonary medicine, cardiology, surgery, and all other medical specialties at Weill Cornell Medicine, we provide complete care for our patients’ ongoing and future medical needs.

Center for Blood Disorders: Special Multidisciplinary Programs

The Comprehensive Regional Hemophilia Center is a recognized hemophilia treatment center for patients with congenital bleeding disorders. We offer a comprehensive care model for both pediatric and adult patients, with research support, access to therapeutic clinical trials, and dedicated nursing specialists.

The Vascular Biology Center promotes clinical care, education, and research in vascular diseases. Here, we treat patients with thrombotic disorders including superficial thrombophlebitis, deep vein thrombosis, pulmonary embolism, and atherosclerosis (peripheral vascular disease, threatened limb loss, non-healing limb ulcers, stroke and myocardial infarction).

The New York Comprehensive Thalassemia Center is one of the largest transfusion-dependent thalassemia centers in North America, offering expertise and access to regular transfusion therapy. We see both pediatric and adult patients here, and have a long history of providing multidisciplinary care and participating in clinical trials.

The Richard T. Silver, M.D. Myeloproliferative Neoplasms Center offers comprehensive care for patients with chronic myeloproliferative neoplasms (polycythemia vera, essential thrombocythemia, myelofibrosis, chronic myelogenous leukemia, and unusual disorders such as hypereosinophilia and mast cell disorders) in collaboration with the Weill Cornell Leukemia Program and the Department of Pathology. This center also provides initial evaluation of patients with chronic thrombocytosis, polycythemia and leukocytosis of unknown etiology.

At the Platelet Disorder Center we care for patients with immune thrombotic thrombocytopenic purpura (ITP) and congenital platelet disorders. In collaboration with the Department of Pediatrics, we are able to offer our patients access to promising new therapies to treat and cure thrombocytopenias through our robust clinical trial offerings. 

Second Opinions

In concert with your referring physician, we are always available to offer a second opinion in the form of a consultation with one of our specialists.

Why Choose Us?

Weill Cornell Medicine has a long history of advancing the care of patients with hematologic disorders, and has been a pioneer in therapies for thrombosis, hemophilia, and thalassemia for over fifty years. We offer a unique, collaborative team approach to treating non-malignant blood disorders that provides patients with access to state-of-the-art diagnostic testing and cutting-edge treatment methods. Delivering high quality care and optimal function is our top priority. We participate in several clinical trials and collaborate with other highly renowned national and international medical institutions.

For more information or to schedule an appointment, call us at (646) 962-2065.

Weill Cornell Medical College is ranked among the nation’s best by U.S. News & World Report year after year.


Our Physicians
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John Chapin, M.D.
John Chapin, M.D.
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Maria De Sancho, M.D.
Maria De Sancho, M.D.
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Jeffrey Laurence, M.D.
Jeffrey Laurence, M.D.
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Ralph Nachman, M.D.
Ralph Nachman, M.D.
Medical Oncology  
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Andrew Schafer, M.D.
Andrew Schafer, M.D.
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