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.)


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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