Dr. Marcus received his medical degree from the University of California at San Diego. After finishing an internship at Mercy Hospital in San Diego, he completed his radiology residency training at the University of Arizona. He then served as a clinical instructor and fellow at the University of California at San Francisco where he focused his attention on magnetic resonance imaging, ultrasound and computed tomography. In addition to cross-sectional body imaging, Dr. Marcus has special interest and experience in performing interventional radiologic procedures. He has practiced radiology in the San Mateo area since 1993.
Dr. Marcus has been active on the CAIMA Board of Directors and has chaired both the Finance and Retirement Plan Committees for many years. He also served a 3 year term as Chief of the Medical Staff for San Mateo County.