Mohamad Kassar, MD

Medical Oncology / Hematology

“Cancer is only going to be a chapter in your life, not the whole story.” -Joe Wissor.

Dr. Kassar is a board-certified hematologist and medical oncologist. He completed his fellowship training at Rush University Medical Center, where he served as a clinical assistant professor of medicine. His cancer research work has been widely published in numerous specialty medical journals, and he has written on a number of different types of cancer.

Dr. Kassar is proud to have served the community of northwest Indiana for the last decade. Dr. Kassar co-directs the Cancer Center at Community Hospital in Dyer, and he serves as the principal investigator for more than 15 clinical trials funded by the National Cancer Institute. He was the first oncologist in the area to offer state-of-the-art immunotherapy in the treatment of various types of cancers, utilizing this approach before they became FDA standards of care.  His focus is to incorporate the latest advances in cancer treatment into his clinical practice. Dr. Kassar places an emphasis on the importance of preserving the quality of life and providing strong support for his patients and their families throughout their cancer treatment journey.


1992 – 1999    Faculty of Medicine , The University of Damascus, Damascus, Syria

2001 – 2004    Internship – Internal Medicine, Hospital of Saint Raphael Major teaching affiliate of Yale School of Medicine,  New Haven, CT

2005 – 2008    Fellowship – Rush University Medical Center, Chicago, IL


American Board of Internal Medicine
American Board of Internal Medicine – Medical Oncology
American Board of Internal Medicine – Hematology

Professional Experience:    

2008 – Present    Northwest Oncology, PC

Professional Societies:    

American Society of Hematology
American Society of Clinical Oncology
American Society for Blood and Marrow Transplantation

The Community Healthcare System
Franciscan Alliance, Inc. (Sisters of St. Francis)