Welcome to Prigge Radiation Oncology Center

At Prigge Radiation Oncology Center in Modesto, California, we strive to offer the best in patient care, the latest in cancer treatment modalities, and the state-of-the-art technology needed to provide outstanding care to cancer patients in California's San Joaquin Valley.

Dr. Peter K. Sien, M.D., M.S.H.A. leads our qualified team of nurses, therapists, medical physicists, dosimetrists and front office team members who are devoted to providing personalized and compassionate care in a comfortable environment.

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Request an Appointment Request an appointment using our our easy-to-use electronic appointment request form. Request an appointment ›		Our Physician Peter K. Sien, M.D., M.S.H.A. is a board- certified radiation oncologist with years of experience and clinical expertise in treating all forms of cancer. Learn more about Dr. Sien ›		Radiation Therapy Radiation therapy has proven to be a safe and effective way to treat cancer for more than 100 years. Learn more about radiation therapy ›

Prigge Radiation Oncology Center in Modesto, CA is a member of the Oncure Medical Corp. national network of cancer treatment centers.