Dr. Mark Chaitowitz obtained his medical degree at the University of Witwatersrand in Johannesburg, South Africa. He relocated to the United States in 2001, where he completed his residency in internal medicine at Albert Einstein Medical Center, and fellowship in hematology and oncology at Thomas Jefferson University Hospital, both in Philadelphia.

In 2013 Dr. Chaitowitz joined the Division of Hematology as an Assistant Professor. He sees patients with a wide range of blood disorders, both benign and malignant. He has a special interest in platelet disorders, as well as in the management of iron deficiency anemia, his area of clinical research.

1. Zheng, C. Y. Minniti, C. P. Chaitowitz, M. H., Sickle cell crisis complicated by synthetic cannabinoid abuse: a case report, Hemoglobin, 2016, accepted for publication.
2. Scott, E., U. Borate, S. Heitner, M. Chaitowitz, W. Tester, and G. Eiger, Pain Management Practices by Internal Medicine Residents: A Comparison Before and After Educational and Institutional Interventions, American Journal of Hospice and Palliative Medicine, 2009; 25(6): 431-439. 
3. Chaitowitz, M. H., A. Ferber and N. Flomenberg, Patient-reported experience of chemotherapy: expectations vs. reality, Journal of Clinical Oncology, 2008; 26 (May 20 suppl; abstr 20686).
4. Darabi, K. Sieber, M. Chaitowitz, M. Braitman, L. Tester, W. Diehl, V. Infradiaphragmatic versus supradiaphragmatic Hodgkin lymphoma: A retrospective review of 1,114 patients. Leukemia and Lymphoma, 2005; 46(12): 1715-1720. 
5. Chaitowitz, M., W. Tester and G. Eiger, Use of a comprehensive survey as a first step in addressing clinical competence of physicians-in-training in the management of pain, Journal of Opioid Management, 2005 May/June; 98-108.
6. Chaitowitz, M., M.L. Shaw and T.R. Mokoena, Gastrointestinal cryptococcosis presenting as spontaneous jejunal perforation in a nonimmunocompromised host, Digestive Disease and Science, 2003; 48(6): 1196-1199.