Our STAFF

The staff of Peninsula Radiation Oncology Center is dedicated to the total well-being of our patients. To contact any of our staff members, click on the "email" link below their biography and we will get back to you within one business day. (Please note: If you have a medical emergency, please call 911 immediately.)


Melissa Bilyeu, RTT

Melissa Bilyeu, RTT

Department Manager/ Lead Radiation Therapist

Melissa is a certified Radiation Therapist with over seven years of experience in the field. She holds a Bachelor of Science in Radiation Health Physics (Pre-Med) from Oregon State University, and a Bachelor of Science in Radiation Therapy from Oregon Health Sciences University.

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Jennifer Smith R.T. (R)(T)

Jennifer Smith R.T. (R)(T)

Radiation Therapist

Jennifer is a board certified radiation therapist and has been working in the field of Radiation Therapy for over 15 years. She earned her A.S. degree at Community College of Allegheny County, and received her clinical training at the University of Pittsburgh Medical Center and Washington University in Pennsylvania.

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Heath Bonsall, CMD, BSRTT

Heath Bonsall, CMD, BSRTT

Medical Dosimetrist

Heath has over nine years of experience in Radiation Oncology. He earned a Bachelor of Science in Radiation Therapy from the University of Wisconsin-Lacrosse. He is also a board certified Radiation Therapist.

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Mark P. Winslow, Ph.D., DABR

Mark P. Winslow, Ph.D., DABR

Director of Physics & Dosimetry

Dr. Winslow has over 10 years of experience in Radiation Oncology, and holds a Doctorate of Engineering Physics from Rensselaer Polytechnic Institute. He is board certified in Therapeutic Medical Physics.

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Rachel Mudd

Rachel Mudd

Billing Specialist

Rachel has a Bachelor’s degree in Business Administration and Community Development, and a minor in Mathematics. She has served as a Billing Specialist for Radiation Business Solutions, our billing partners, for over two years. Rachel is dedicated to providing knowledgeable and compassionate service for patients and their families.

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