Cassandra D. Josephson MD
Pediatric Anemia and Red Blood Cell Hematology, Pediatric Coagulation Disorder Hematology
Professor, Oncology Johns Hopkins School of Medicine Hawkins Family Endowed Professorship Director, Cancer and Blood Disorders Institute Director, Blood Bank and Transfusion Medicine Johns Hopkins Children’s Hospital, St. Petersburg, FL Adjunct Professor, Pathology/Laboratory Medicine Emory University School of Medicine
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501 6th Avenue SouthSt. Petersburg, FL 33701
Phone+1 727-898-7451
Fax+1 727-898-7452
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Summary
- Cassandra Josephson, MD is a Pediatric Hematology and Oncology specialist based in Saint Petersburg, FL. She has subspecialties in Pediatric Anemia and Red Blood Cell Hematology, as well as Pediatric Coagulation Disorder Hematology. Dr. Josephson completed her residency in pediatrics at the University of Colorado and two fellowships at Emory University School of Medicine focusing on Blood Banking/Transfusion Medicine and Pediatric Hematology/Oncology. She has extensive experience handling cases related to cytomegalovirus, transfusion reactions, hematopoietic stem cell transplantation, platelet transfusion, and anemias. Dr. Josephson has also contributed significantly to her field with several publications and clinical trials.
Education & Training
Emory University School of MedicineFellowship, Blood Banking/Transfusion Medicine, 2002 - 2003- Emory University School of MedicineFellowship, Pediatric Hematology/Oncology, 1999 - 2002
University of ColoradoResidency, Pediatrics, 1996 - 1999
University of South Florida College of MedicineClass of 1996
Certifications & Licensure
FL State Medical License 2022 - 2028
GA State Medical License 1999 - 2023
American Board of Pathology Blood Banking/Transfusion Medicine
American Board of Pediatrics Pediatric Hematology-Oncology
Clinical Trials
Publications & Presentations
PubMed
- Pre-transfusion platelet counts and bleeding in very low birth weight infants.Elizabeth F Stone, Rebecca Birch, Jeanne E Hendrickson, Erika M Edwards, Ruchika Goel
Journal of Perinatology. 2026-07-27 - 1 citationsRed blood cell transfusion survival in sickle cell disease is reduced by donor characteristics and recipient spleen activity.Marianne E M Yee, Patricia E Zerra, Richard O Francis, Kirk A Easley, Christopher M Lough
Blood Advances. 2026-07-14 - 3 citationsInternational classification of diseases codes have low positive predictive value for neonatal morbidities.Jeanne E Hendrickson, Rebecca J Birch, Martha C Sola-Visner, Brian R Branchford, Xuxin Chen
Journal of Perinatology. 2026-06-01
Abstracts/Posters
- Severity of Thrombocytopenia at the Time of Platelet Transfusion Influences Post-Transfusion Platelet Kinetics and the Effects of Platelets on Plasma Cytokines in a Mo...Cassandra D Josephson, 61st Annual American Society of Hematology Meeting, Orlando, FL, 12/7/2019
- Associated Co-Morbidities, Healthcare Utilization, and Mortality in Hospitalized Children and Adults with Hemophilia in the United States: Updated Nationally Represent...Cassandra D Josephson, 61st Annual American Society of Hematology Meeting, Orlando, FL, 12/9/2019
Press Mentions
State of Science Spotlights Health, Oceans and AIFebruary 5th, 2026
State Funding Propels Local Pediatric Cancer ResearchNovember 5th, 2025
Four Florida Children’s Hospitals Will Share a $30 Million Boost for Cancer ResearchNovember 4th, 2025
Grant Support
- Impact of Anemia and Its Treatment on Gut Injury in Preterm InfantsJOHNS HOPKINS UNIVERSITY2023–2025
- Pediatric Transfusion Medicine Academic Career AwardNational Heart, Lung, And Blood Institute2007–2011
- Transfusion Medicine/Hemostasis Clinical Trails NetworkNational Heart, Lung, And Blood Institute2009
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