M. Elaine Eyster, MD, FACP

M. Elaine Eyster, MD,  FACP
Employed by Penn State Health

Academic Appointments

Distinguished Professor of Medicine and Pathology
Division Blood and Vascular Disorders

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About Me

Dr. Eyster received her medical degree from Duke University, School of Medicine in 1960 and completed a residency in Internal Medicine at New York Hospital-Cornell Medical Center (currently known as New York-Presbyterian/Weill Cornell Medical Center) in 1963. She remained at New York Hospital-Cornell Medical Center, where she completed a fellowship in hematology in 1966.

Dr. Eyster joined the medical staff at Penn State Hershey Medical Center in 1970. She served as Chief of the Division of Hematology from 1973-1995, and has been the Director of the Hemophilia Program and Medical Director of the Special Hematology/Coagulation laboratory since 1973. In 2022, she was appointed interim chief of the newly established Division of Blood and Vascular Disorders. Her clinical and laboratory interests are disorders of bleeding and clotting, and the anemias.


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Professional Education


Medical School, Duke University School of Medicine - 1960


Fellowship, Hematology New York-Presbyterian/Weill Cornell Medical Center - 1966


Residency, Internal Medicine New York-Presbyterian/Weill Cornell Medical Center - 1963

Research Interests

  • Hemophilia genotype/phenotype correlations
  • Inhibitor formation in hemophilia A and B

Academic Interests

  • Anemias
  • Bleeding disorders
  • Hemophilia and von Willebrand Disease
  • Transfusion- related HIV and HCV infections


  • Career Research Excellence Award, Penn State University College of Medicine
  • Distinguished Medical Alumnus Award, Duke University
  • Distinguished Professorship in Medicine and Pathology
  • Pennsylvania Medical Society Distinguished Service Award
  • Thrombosis and Hemostasis Research Society Lifetime Achievement Award