Fighting cancer with outstanding patient care and innovaive treatment technology.

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 Peter K. Sien, M.D., M.S.H.A. Radiation Therapy
Request an Appointment

Request an appointment using our our easy-to-use electronic appointment request form.

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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.

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Radiation Therapy

Radiation therapy has proven to be a safe and effective way to treat cancer for more than 100 years.

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