Dr. Keiser graduated from the University of Illinois with a Bachelors Degree in Chemistry. He attended Stanford Medical School where also completed his residency work and has a fellowship from Yale University in Medical Oncology.
Dr. Keiser joined Redwood Regional Medical Group in 1977 and presently serves as Principal Investigator for Redwood's gastrointestinal clinical trials. He also is President of the Association of Northern California Oncologists (ANCO).
Dr. Keiser is also on Medical Staff at all local hospitals in Santa Rosa and surrounding cities, including Petaluma, Lakeport, Sonoma and Ukiah.