Dr. Mazidi is a board-certified medical oncologist and hematologist dedicated to providing compassionate, personalized cancer care grounded in the latest advances in medicine and research. He combines a strong academic and clinical background with a deeply patient-centered philosophy, striving to care for the whole person — not just the disease. Dr. Mazidi earned his undergraduate degree from University of California, Berkeley before receiving his medical degree from Tulane University. He completed his residency in internal medicine at Johns Hopkins University, followed by fellowship training in hematology and oncology at Fox Chase Cancer Center.

In addition to his clinical training, Dr. Mazidi has a strong passion for cancer research and drug development. Prior to joining Marin Cancer Care, he was involved in the design and conduct of clinical trials and investigational cancer therapies. At Marin Cancer Care, he now leads the clinical research program, overseeing Phase 1 through Phase 3 clinical trials and helping bring promising new therapies to patients in the community.

Dr. Mazidi believes that exceptional cancer care requires more than treating the physical illness alone. He takes a holistic approach to each patient’s journey, recognizing the importance of emotional, mental, and spiritual well-being alongside cutting-edge medical treatment. His goal is to ensure every patient feels heard, supported, and cared for while receiving highly individualized, evidence-based therapy.

He treats all cancer types, with particular expertise and interest in thoracic malignancies and hematologic cancers.

Outside of medicine, Dr. Mazidi enjoys spending time outdoors hiking, biking, and surfing.