Tim Grennan, MD

Oncology, North Valley

People coping with cancer have a powerful ally in their corner; his name is Tim Grennan, MD.

Since 1986, Dr. Grennan has been Director of Sacramento’s Internal Medicine Residency Program. He forged and fostered a unique relationship with the University of California Davis School of Medicine where, as a Clinical Professor, he trains, mentors and inspires dozens of young doctors and medical students each year.

Dr. Grennan is one of Kaiser Permanente’s principle investigators for clinical trials. His work, along with that of his colleagues, enables hundreds of Kaiser Permanente patients to receive promising new treatments even before they are FDA approved and available to the general medical community.