Language: English
Gender: Male
Non-Malignant Hematology
520 East 70th Street, Starr Pavilion, 3rd Floor
New York, NY 10065
P: 646-962-2065 | F: 646-962-1605
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Personal Statement

Dr. Ralph L. Nachman, the Lewis Thomas University Professor and Associate Dean of Clinical Research at Weill Cornell Medical College, is a physician, scientist, educator and administrator. Dr. Nachman has pioneered discoveries in hematology and medical oncology that have furthered the development of new clinical solutions to blood and vascular disorders.

In 1963, he began a more than 40-year career with New York Presbyterian Hospital and Weill Cornell Medical College, beginning as Director of Laboratories for Clinical Pathology, followed by his 25 years as Chief, Division of Hematology and Oncology and 17 years as Chairman of the Department of Medicine at Weill Cornell Medical College and Physician-in-Chief at New York Presbyterian Hospital.

Dr. Nachman has spearheaded multiple endeavors in biomedical research, clinical programs, educational curricula, residency training, fundraising, and quality assurance. His discoveries in vascular biology, and the establishment of the Specialized Center of Research (SCOR) in Thrombosis (National Institutes of Health) at New York-Cornell, led to his performing the first culture of human endothelial cells. This achievement initiated a modern explosion of knowledge in vascular biology. He has published numerous articles in the field of hematology and has lectured around the world. His honors include, The Stratton Award from the American Society of Hematology and the Robert Williams, MD Distinguished Chair of Medicine Award from the Association of Professors of Medicine. He is a member of the Institute of Medicine of the National Academy of Sciences.

View Biography


Board Certifications
  • Internal Medicine
  • Medical Oncology
  • Hematology
  • Blood Clotting Disorder
  • Platelet Disorder
  • Bleeding Disorder
  • Hypercoagulable State
  • Idiopathic Thrombocytopenic Purpura (ITP)
  • Von Willebrand's Disease

Insurance Plans Accepted

The following represents most of the managed care plans accepted by this physician. If your insurance carrier does not appear here please contact the physician’s office as they may have individual contracts not included on this site.

* indicates this physician is no longer accepting new patients with this insurance plan.

  • AETNA [Medicare]
  • Aetna - Weill Cornell [POS]
  • Affinity Essential
  • Affinity Health Plan
  • Emblem Select Care
  • Empire Blue Cross/Blue Shield [PPO]
  • Empire Blue Cross/Blue Shield [HMO]
  • Empire Blue Cross/Blue Shield [Mediblue (Senior)]
  • Empire Blue Cross/Blue Shield [EPO]
  • Empire Empire Blue Cross/Blue Shield HealthPlus [CHP]
  • Fidelis Care
  • Health Insurance Plan of NY (HIP) [Medicare]
  • Health Insurance Plan of NY (HIP)
  • Health Insurance Plan of NY (HIP) [Medicaid]
  • Health Republic
  • Medicaid
  • Medicare
  • Oscar
  • Oxford Health Plans [Medicare Advantage]
  • Oxford Health Plans [Freedom]
  • Rockefeller University - CoreSource
  • United Empire
  • United Health Care [Medicare]
  • United Health Care [Community Plan]
  • United Health Care
  • VNSNY CHOICE Medicare [HMO]


  • M.D., Vanderbilt University School of Medicine, 1956

Honors and Awards

Fellow, American College of Physicians
Henry Moses Alumni Award-Montefiore Hospital
President, New York Society for the Study of Blood
Executive Council, American Society of Hematology
J.J. Smith Award for Teaching- Department of Medicine, New York Hospital-CUMC
Stratton Lecturer, American Society of Hematology
Royal Society of Medicine Foundation Award
Institute of Medicine of the National Academy of Sciences
Fellow, New York Academy of Medicine
Fellow, American Association for the Advancement of Science
Maurice R. Greenberg Distinguished Service Award
Robert Williams MD Distinguished Chair of Medicine Award, Association of Professors of Medicine
The New York Weill Cornell Medical Center Alumni Council, NYP-WCMC Service Award



Emeritus Staff
NewYork-Presbyterian Hospital

Professor Emeritus of Medicine
Weill Cornell Medical College, Cornell University


1963-1969         Director, Laboratories for Clinical Pathology, New York Hospital

1963-1965         Instructor in Medicine, Cornell Medical Center

1965-1972         Assistant Professor, Medicine, Cornell Medical Center 

1968-1972         Associate Professor, Medicine, Cornell Medical Center

1968-1993         Chief, Division of Hematology, Cornell Medical Center

1968-1972         Associate Attending Physician, The New York Hospital

1969-1970         Guest Investigator, The Rockefeller University

1972-                Attending Physician, New York Presbyterian Hospital

1972-                Professor of Medicine, Cornell Medical Center

1974-1978         Vice Chairman, Department of Medicine, Cornell University Medical College

1976-1996         Director, Specialized Center of Research (SCOR) in Thrombosis,     Cornell University Medical College

1979-1991         Co-director, Rockefeller-Cornell M.D.- Ph.D. Program

1987-1989         Board of Overseers, Cornell University Medical College

1990-2007         Chairman, Department of Medicine, Weill Medical College of Cornell University

1990-2007         Physician-in-Chief, New York Presbyterian Hospital

1992-2007         The E. Hugh Luckey Distinguished Professor in Medicine

2007-                Associate Dean, Clinical Research

2007-                Lewis Thomas University Professor