Clinical Division

The clinical division of the Department of Radiation Medicine is staffed by 12 radiation oncologists and 2 advanced practice providers who specialize in a variety of cancer areas and treatments. Our staff work at various locations across Oregon including Astoria, Beaverton, and are committed to health and wellness of our patients.

Learn more about each Radiation Oncologist below

Howard Sandler, MD (Dept Chair)

Aaron Grossberg, MD, PhD

Arthur Hung, MD

Carl Post, MD

Casey Williamson, MD

 

Cheryl Claunch, MD, PhD

David Klos, MSN, APRN, ANP-BC

Grace Yuh, MD

Irene Gielen, DNP, MSN, ARNP, FNP-BC

Josh Walker, MD, PhD

Nima Nabavizadeh, MD

Reid Thompson, MD, PhD

Timur Mitin, MD, PhD

Why aren't there any ratings?

There is no publicly available rating for this care provider for one of three reasons:

  1. They do not see patients.
  2. They see patients but have not yet received the minimum number of patient experience reviews. To be eligible for display, we require a minimum of 30 surveys. This ensures that the rating is statistically reliable and an accurate reflection of patient experience.
  3. They see patients but do not see enough patients to collect a statistically-reliable patient experience rating.