Diane C. Tsai, MD

Dr. Diane Tsai is a board-certified oncologist who has dedicated 35 years to cancer care. She earned her medical degree from Rutgers New Jersey Medical School and specializes in treating various forms of cancer. Dr. Tsai is fluent in both English and Spanish, allowing her to serve a diverse patient population.

Dr. Tsai practices at PeaceHealth St. Joseph Cancer Center in Bellingham, Washington, and maintains affiliations with multiple hospitals including Oroville Hospital, Kona Community Hospital, The Queens Medical Center, Community Hospital of the Monterey Peninsula, and PeaceHealth United General Medical Center. She focuses on treating prostate cancer, including advanced cases and recurrent forms of the disease. Her treatment approaches include external beam radiation and intensity modulated radiation therapy, which allow for precise targeting of cancer cells while protecting healthy tissue. Patients have given Dr. Tsai an average rating of 4.0 out of 5 stars.