Active Membership shall be reserved for physicians, radiation physicists and radiation or cancer biologists who satisfy the requirements set forth in any one of the following paragraphs:

• A physician who is certified in radiation oncology or therapeutic radiology by the American Board of Radiology or by another board recognized by the Board of Directors of the Society as being equivalent and who devotes a substantial portion of his or her clinical time to radiation oncology.
• A radiation physicist who is certified in radiological physics or therapeutic radiological physics by the American Board of Radiology or by another board recognized by the Board of Directors of the Society as being of equivalent rank and who devotes a substantial portion of his or her professional time to radiation oncology or radiation sciences.
• A radiation or cancer biologist who holds a doctoral degree and devotes a substantial portion of his/her professional time to radiation oncology or radiation sciences.

Active membership dues are $375 U.S. annually.  In addition to the Red Journal (International Journal of Radiation Oncology*Biology*Physics) subscription Active members are entitled to all other benefits and services offered by the Society:

• Meeting registration discounts.
• Discounts on products to improve your practice.
• Quarterly ASTROnews subscription.
• Biweekly ASTROgram e-mail newsletter subscription.
• Exclusive online access to ASTROnews and ASTROgrams.
• Free hardcopy and online access to the ASTRO Annual Membership Directory.
• Listing in "Find a Radiation Oncologist" on astro.org and RTAnswers.org Web sites.
• Early registration opportunities in addition to discount rates for ASTRO meetings.
• Specifically for ASTRO Physicist members:
  • Physics Plenary session at the ASTRO Annual Meeting.
  • Physics-related grants (contact the Research Department for more details).
  • Physics education day at the ASTRO Annual Meeting.
• ASTRO Government Relations Legislative Tracking Chart.
• Integrating the Healthcare Enterprise Radiation Oncology (IHE-RO) Task Force.
• Free Web site template for member radiation oncology facilities.
• Complimentary online subscription to the Green Journal.
• Discount on classified advertising in ASTROnews.
• Discounts on sister journals.
• Free media training.