The Shields Oncology physics staff is comprised of a team of board certified physicists and dosimetrists that work together to offer patients the best possible treatment with the best possible technology. Dosimetrists are experts in radiation therapy treatment planning and every patient treated at a Shields Oncology site has a dedicated dosimetrist working several hours or even days to perfect their plan for treatment. Physicists oversee the clinic to ensure that the radiation treatments are safe, effective, and optimal for the patients. This requires both clinical skill as well as expertise in departmental equipment and computer systems.


Melita Koistinen, M.S., D.A.B.R., Physicist

Ms. Koistinen board certified by the American Board of Radiology in radiation therapy physics. She graduated with a Bachelor of Science in biology from Clark University. She earned her Master of Science degree in medical physics from Wayne State University in Detroit, Michigan.

Ms. Koistinen worked as a dosimetrist at William Beaumont Hospital while at Wayne State. After graduation she worked in the Radiation Therapy Department at the VA Hospital in Jamaica Plain. Melita also taught physics classes to radiation therapy students from Laboure College. She then worked at Holy Family Hospital where she was responsible for the brachytherapy program.

She is currently a clinical physicist at Shields Oncology Center in Mansfield where her primary role is clinical physics, linear accelerator maintenance and brachytherapy. 



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