What is Proton Therapy
Read our Covid-19 policy

Call Now For More Information

General Questions or
Schedule an Appointment


Current Patients


Physician Line


Read our Covid-19 policy

Meet Kat Sun, our returning radiation therapist

Meet Kat Sun, our returning radiation therapist

Kat Sun isn’t new to the Proton Center. She worked here from 2014 to 2016, but she recently rejoined us in a new role as a radiation therapist.

Sun is the youngest of seven siblings and grew up in Bellevue. That’s where she met her partner, Chris, who also works in the medical field as a dosimetrist.

Sun has three wonderful children: Jaelin, Ava and Charlotte. It was Ava’s diagnosis of hydrocephalus at age one that got Sun interested in medicine.

“The nurses were all incredible with her,” says Sun. “I wanted to feel that confidence in taking care of Ava, too.”

Sun decided to study nursing. She first became a certified nursing assistant (CNA), working at UW Medicine. In fact, she thought she was going to continue being a CNA when she applied to work at the Proton Center but ended up becoming a treatment team assistant.

“I fell in love with the field,” Sun says. “My colleagues, Nikki and John, encouraged me to go back to school to become a radiation therapist, so that’s what I did. It made me feel so valued to get a call from John years later to see if I wanted to come back!”

Sun enjoys the fun and easy-going team she works with, as well as her patients, who each have an interesting story.

When Sun isn’t working, she likes to bake, and the whole family loves to go camping and spend time swimming and paddleboarding at the beach. Their favorite beach is Chism Beach, in Bellevue. It’s secluded and has a fun dock that the kids love to swim out to and jump off of.

Sun and her family at Christmas time.

Please welcome Sun back when you see her for treatment! She’ll take wonderful care of you.