meet yOur Team


Dr. Natalie Marshall

Dr. Natalie Marshall is a board certified medical oncologist and has been practicing oncology for 21 years and specializes in breast cancer. She went to medical school at the University of Texas Medical Branch in Galveston, Texas and did her internal medicine residency at the University of New Mexico Hospital in Albuquerque. She trained in Medical Oncology at Yale New Haven Hospitals and was on the faculty at Yale until she moved to New Mexico to practice for 12 years. She has been in the Bay Area since 1/2013 and works in Emeryville with Epicare. She was voted a Top Doc for San Francisco Bay Area and elected by her peers to Leading Physicians of the World. Dr. Marshall in intensely interested in the effect of lifestyle modifications on quality of life and recurrence risk reduction in cancer patients and in the prevention of cancer in unaffected individuals. It motivated her to approach Dave Spitz to help design a strength training program for risk reduction and prevention. She trains at California Strength for Olympic weightlifting in the master’s division and has seen firsthand the excellent coaching and programming that is offered to athletes of all types and ages. Survivor Strong is that skill translated for patients so access to this important treatment is available to anyone regardless of place of residence, financial resources, or fitness level.

David Spitz

Dave Spitz is the owner and head coach of California Strength, a facility in San Ramon, CA that specializes in human performance. He is a Certified Strength & Conditioning Specialist (CSCS) and holds the distinction of a USA Weightlifting Senior International Coach. Since 2008, California Strength has produced numerous NFL Athletes, world class Olympic weightlifters and helped people around the world achieve their goals through various online programs. His experience and knowledge in human performance has helped guide the development of the Survivor Strong program.