Dr. John Paul Graff, D.O.

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Get to know Hematopathologist Dr. John Paul Graff, who serves patients in Sacramento, California.

A knowledgeable hematopathologist, Dr. Graff serves as an Assistant Professor in the Division of Hematopathology and Informatics, and is the Associate Director of Clinical Informatics at UC Davis Medical Center. He has a unique approach to patient care, considering the whole patient when reviewing their biopsies and laboratory data. He is committed to providing accurate and efficient diagnoses to his patients, allowing them access to the most optimal treatments available.

His clinical interests lie in malignant and non-malignant hematopathology, where he integrates flow cytometry and molecular testing to provide the most accurate diagnosis for his patients. He is also passionate about the research and academic aspects of his field, and is actively training the next generation of physicians on how technology can improve the lives of patients and the physicians who work with them.

Graduating from the Vanderbilt University School of Engineering in 2007, Dr. Graff went on to attend the Lincoln Memorial University DeBusk College of Osteopathic Medicine for his medical education. He completed his residency in anatomic & clinical pathology at the UC Irvine Medical Center in 2016, before completing his fellowship in hematopathology at the UC Davis Medical Center in 2017.

As a testament to his success, the doctor is board-certified in anatomic & clinical pathology, hematopathology, and clinical informatics by the American Board of Pathology (ABPath). The mission of the ABPath is to promote the health of the public and advance the practice and science of pathology by establishing voluntary certification standards and assessing the qualifications of those seeking to practice the specialty of pathology.

An enthusiastic researcher, he applied his expertise in hematopathology to several publications related to the recent and ongoing COVID-19 pandemic and its impacts on the hematologic system. His research has been vital in diagnosing and treating those critically ill with the virus as we discover more about its pathophysiology. He has also worked on a California-wide initiative to classify the causes and types of Alzheimer's dementia and collaborates with colleagues at other University of California campuses.

Hematopathology is the study of diseases and disorders affecting blood cells, their production, and any organs and tissues involved in hematopoiesis, such as bone marrow, the spleen, and the thymus. Hematopathologists are highly trained healthcare providers who specialize in diseases of the blood and blood components. These include blood and bone marrow cells. Hematological tests can help diagnose anemia, infection, hemophilia, blood-clotting disorders, and leukemia.

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