ASTRO is the largest organization in the United States related specifically to the field of radiation oncology and is presently represented by more than 10,000 membersin the U.S., Canada and around the world. Visit the membership overview page to learn more about who belongs to ASTRO.

ASTRO membership is available to physicians including radiation oncologists, physicists and biologists, and to nonphysicians with an interest in radiation oncology. More information on membership and details on the different membership categories, as well as details on the benefits and services available, can be found by clicking on the choices on the right.

Inquiries regarding ASTRO membership and member benefits should be directed to:

Steven M. Smith
Director of Membership
703-839-7326

Todd Karstaedt
Membership Coordinator
703-839-7328

Eugene Kim
Membership Coordinator
703-839-7360